This moves TestDialogHelper to a separate file, and cleans up a couple
of magnification tests.
Bug: b/397530196
Flag: EXEMPT refactor
Test: SettingsRoboTests:com.android.settings.accessibility.MagnificationModePreferenceControllerTest &&
SettingsRoboTests:com.android.settings.accessibility.MagnificationCursorFollowingModePreferenceControllerTest
Change-Id: I68e70061b84dacacf95bc05c784677b8d9794754
Running Settings Robolectric tests
The full suite
$ croot
$ atest SettingsRoboTests
Running a single test class
With a filter
$ croot
$ atest SettingsRoboTests:com.android.settings.display.AdaptiveSleepPreferenceControllerTest
You can also run any single test class with atest (it will try to find the correct path)
$ atest AdaptiveSleepPreferenceControllerTest