Add logic to determine if a wallpaper is compatible with a display

Also fix a bug that the fallback wallpaper isn't used after setting a new wallpaper due to the wallpaper connection hasn't established yet.

Test: atests FrameworksMockingServicesTests:WallpaperManagerServiceTests
Flag: android.app.enable_connected_displays_wallpaper
Bug: 384519749
Bug: 384521079

Change-Id: I392a072e87a6977e89a9b8e884d7a2f07d1c0708