Add AccessibilityWindowManagerWithAccessibilityWindowTest

This is a copy of AccessibilityWindowManagerTest.

With the new data flow behind a flag compute_window_changes_on_a11y,
the tests have to change their set up (updating windows from wm).
This means all test cases in AccessibilityWindowManagerTest has to be
updated.

In the following CL, the tests will be updated to use a new flow.
This CL just copies the old tests with a new name so that future CLs get
a clear diff.

Bug: 322444245
Bug: 325341171
Test: AccessibilityWindowManagerTest AccessibilityWindowManagerWithAccessibilityWindowTest
Change-Id: I51bc70c4b4a478ae59d993546e79518095106ecc