Lazily inject WallpaperInteractor (2/2)

Since ColorCustomizationManager seems to be heavy to instantiate, and
WallpaperInteractor needs it, we only lazily inject it when needed.

Test: Make sure that WallpaperInteractor abd ColorCustomizationManager
Test: are not instantiated when injection graph created.
Bug: 311537830
Flag: None
Change-Id: I78e012bc474bdd5bd8c4fc3bda92c5d566a23b8e