Merge changes from topic "cherrypicker-L89500000962957882:N78800001403169312" into aosp-main-future
* changes:
fix(non linear font scaling): fix test timeout flakiness
Fix flaky tests
Fixes @Nullable issues SystemUI-tests
Fixes @Nullable issues in System UI and WMShell.
Fix more kotlin nullable errors in services.permission
Fix runtime kotlin nullable error in ScreenshotDetectionControllerTest
Fix NullPointerException in ControlsRequestDialogTest
Fix tests broken by @NonNull annotation fix
Fixes more @Nullable issues in System UI and WMShell.