[Panlingual] Adds a filter of application for per apps locale change.

 - Settings -> System -> app language -> app languages
   Use this filter to only show apps allowed to change the locale.
 - Settings -> Apps -> all apps -> any one of app -> language
   Use this filter to only show the language preference of app allowed to change the locale.
Bug: 210935436
Test: atest pass.
Test: local test.
Change-Id: I2f8a0815dae68392e11882ad9e1e4945492efdba