Update window info by attributes in an earlier stage

This is a pure refactoring behind computeWindowChangesOnA11y flag.
Doing this will simplify code flow after the flag is fully enabled.

Bug: 322444245
Test: CtsAccessibilityServiceTestCases CtsAccessibilityTestCases AccessibilityWindowManagerTest
Change-Id: I32514c709da04b50398fc5edc7dc4e7de172882a
1 file changed