Modify App languages entry

1. add a new category
2. move App languages preference to the new category

Bug: 379962955
Flag: com.android.settings.flags.regional_preferences_api_enabled
Test: check hsv and atest ManageApplicationsTest, AppLocalePreferenceControllerTest
Change-Id: Ie6bdcb1899b705cff48ce3be9c0d0b060be8ee72
5 files changed