[A11y Focus API] Update ViewTest and TextViewTest to test request rectangle with source

* This change is associated with the change to the View API to pass a
  source parameter into requestRectangleOnScreen and to TextView to use
  this new API.
* Existing tests have been flagged accordingly in ViewTest and
  TextViewTest.
* New tests have been added and flagged to test the new API to ViewTest.
* New tests has been added and flagged to test behavior in TextViewTest.

Flag: android.view.accessibility.request_rectangle_with_source
Bug: 391877896
Bug: 396404842
Test: Added and flagged tests in ViewTest.java, TextViewTest.java
Change-Id: I46b2df6befd306103486e77e739c161027ade524
5 files changed