Update test to behave correctly due changes in the text components.

Correction after migration fix for (#20469).

uitest/src/test/java/com/vaadin/tests/components/textfield/TextFieldsValueChangeModeTest.java

@@ -96,13 +96,9 @@ public class TextFieldsValueChangeModeTest extends MultiBrowserTest {
     private void testTimeout(String id) {
         openTestURL();
         WebElement eagerTextField = findElement(By.id(id));
-        eagerTextField.sendKeys("f");
-        eagerTextField.sendKeys("o");
-        eagerTextField.sendKeys("o");
+        eagerTextField.sendKeys("foo");
         sleep(1000); // Timer set to 1000ms
-        eagerTextField.sendKeys("b");
-        eagerTextField.sendKeys("a");
-        eagerTextField.sendKeys("a");
+        eagerTextField.sendKeys("baa");
         sleep(1000); // Timer set to 1000ms
         assertLog(id, "foo", "foobaa");
     }