Add tests for Media Categories Picker Backend

Bug: 379627647
Bug: 317118334
Test: PickerDataLayerV2Test
Test: MediaGroupCursorUtilsTest
Change-Id: I083dd3ed37c35d3bd48f29d6cd0871750d315759
Flag: com.android.providers.media.flags.enable_photopicker_search

Shubhi committed 1y ago

9f906f06b0a004234b10499d0e3771a8e17f1507

Parent: 73ae312