fix: Do not allow border to grow row height (#12254)

fix: Do not allow border to grow row height (#12254)

* fix: Do not allow border to grow row height

If css grows row height the VSrollTable rowHeight logic does not work allways

Fixes: https://github.com/vaadin/framework/issues/12251
* Compensate change in default row height

* Merge branch '7.7' into fix12251

* Replace calc with round

* Make fix more pin-point

* The first row does not have border thus regular height

* Fix drag-drop styles

* Further fix in drag-and-drop style

* Update TableDropIndicatorValoTest-indicator_ANY_Chrome__indicator.png