Spring add-on needs to use these added methods in order to fix #10922

issue in #11343 and #11385 is not reproducible on top this patch
Three different bugs are involved in this fix:
we bring the old fix(#11094) back and fixed the other related issues:
1) allow adding the same new item after dataProvider got reset, This is cause by the client side parameter `LastNewItemString`, it saves the value added before resetting. 
2) clear the pending newItem eagerly, so that the same value will not be added again.

* Update to 8.9-SNAPSHOT

* update in bom module

* Create StringToUuidConverter.java

Implements the `Converter` interface, to support converting back-and-forth between `String` and `UUID` (a type built into Java 5 and later).

See Issue # 11,051.
https://github.com/vaadin/framework/issues/11051

* Formatting cleanup, remove sinces

* Clicking on slider makes handler move

Fixes #1496

* Introducing control over clicking behaviour

- User will have to enable process of the click event on handle calling `slider.setEnableClickHandler(true);`
- Clean-up the handler logic in VSlider.java
- Renaming the property to `updateValueOnClick`
- Added JavaDocs
- Fixing tests

* Reset selection on DataProvider change in RadioButtonGroup

Fixes #11454

Other components needing the same fix are ListSelect,NativeSelect,Combobox (The ones implementing HasDataProvider and extending AbstractSingleSelect. Grid is not affected as it extends AbstractListing and hadles selection differently)

* Added test case

Verify that ValueChangeListener is actually fired after value is reset setting new DataProvider

Fixes #11489

Documents the possibility to use vaadin:// and theme:// in JavaScript and StyleSheet annotations.

Fixes #8675

If BrowserWindowOpener is used with constructor using Class<? extends UI> as parameter, it will have UI provider with generated url. This will not match UI beans in contextual storage and hence newly created UI will not be managed bean. Due this, injection to new UI instance will not happen. If you are using CDI , BrowserWindowOpener(String) constructor needs to be used.

* Fixing NPE when ItemCaptionGenerator returns null

Adding similar logic in setDataProvider(...) as used elsewhere in ComboBox.java (e.g. generateData(..) see line 314)

fixes issue #11434

* add accessor methods for CUSTOM_SERIALIZERS in JsonCodec

* javadoc

* removed removeCustomSerializer method, renamed putCustomSerializer to addCustomSerializer, added sanity checks and JavaDocs

* refactored addCustomJsonSerializer to set, added test UI

* move enums to be parsed after custom serializers

* move adding custom serializer to static block

* throw an exception if multiple serializers are registered for class

* updated javadocs

* changed CustomJSONSerializerTest to a SingleBrowserTest

* moved CustomJSONSerializerTest to server/ and it's now not a browser test

* removed CustomJSONSerializerTest

Fixes #11451

* Fix an NPE caused by the previous fix to Grid's frozen columns (#10653)

If the user managed to get two frozen column count changes into a single server round-trip before the component had been attached, the previous fix  #11346 lead to a null pointer exception since there was no diff state available.

This fix adds a null check before removing the frozen column count value from the diff state so that this will not happen.

Closes #10653

Navigation needs to be done also in doRefresh(..) in similar fashion as in doInit(..)

Fixes https://github.com/vaadin/framework/issues/11416

* Add Javadoc to the ScrollTo methods in TreeGrid

* add possibility to configure nested null behavior to Grid.Column

* added addColumn method that allows configuring the nested null handling behavior of the column

* added uitest for nested null value handling, implements #11137

* Some formatting changes

* add client side integration for custom styles for checkbox.label and checkbox.input

* add server side integration for checkbox element styling

* add server side tests

* add client side test

* Improve VMenuBar click handling logic

During `updateFromUIDL` inside MenuBarConnector we empty and re-instantiate the components of MenuBar. When we are modifying the Menubar from the BlurEventListener of another component, we ,by this, remove widgets, therefore clickEvent is not fired and the action of the MenuItem is not proceed as a result. (The BlurEvent is fired before the click event in the chain of events. )

To improve the situation, we catch onMouseDown event , which is fired before BlurEvent,by assigning mouseDown flag to true. Then if no click event has yet happened, we delay the execution of update inside `updateFromUIDL` by default 500 ms. Then if click event occurs, it proceeds normally. The time can be increased/decreased using setter.

There is no delay, if we are clicking on the MenuBar as usual or no Blur listener is set.

This change allows setting descriptions

* Remove accidentally committed comment

* Don't update the state on the getDelayMs call

* Complete the empty since tag

* Request data update before client response

* fix the accidental commit

* add tests

fixes #11320

* Add missing FocusShortcutListener

Was removed from 8.0 and not readded.

Fixes #8297

* Update Release note for this change

7.1. (#11156)
* This the range might be necessary to increase when Liferay 7.2 or
newer has been released.

In certain cases setting the frozen columns didn't produce the expected result in the client side widget state. This happened if the frozen columns value was set to be the same it was before removeAllColumns was called.

This fix removes the frozen column value from the diff state so that the value gets properly set in the client side.

Closes #10653

* Revert "Update ComboBox internal state on new item added (#11094)"

This reverts commit 56ce91c616.

* Add tests to verify the issue

* Add javadoc for validate() call in Binder

This refactoring addresses two issues cased by dropping updatedData before it was processed. Issues arise , when visibility has change.

Fixes #11274 and similar issue within RadioButton

There is no reliable way to test automatically NativeSelects in Grid, but adding UI test, at least

Fixes #11276 

Refactor the code and correct the logic for validation

Rename an internal variable, as it contains more than one type of messages

Fix upload issue

* Make value changes in color picker user originated

This is not a programmatically initiated event, so it should have the
'userOriginated' property set to 'true'.

 - Added test to verify that indeed event is user originated after the change

* Add Test for closing window with focused textfield

verify issue #10642

* Refactor the code about using keyMapper

Added note that style generator is not applied to the Editor

See also: https://github.com/vaadin/framework/issues/11169

* Test case for removing Grid with components

* This reverts commit b2745dc14f.

Add test case to address the issue with removing gird with components;
Current situation: the grid cannot be removed and client-side throw an error. 
fixes: Revert the corresponding change, as it didn't address any issue which was fixed.

* Suppress unavoidable UIDetachedException

Fixes #11144

* Updated JavaDoc of getColumn(..) method

Fixes https://github.com/vaadin/framework/issues/9920

Javadoc correction of typos in getAcceptMimeTypes() and setAcceptMimeTypes(String acceptMimeTypes)