Didn't test out widgets in Part 5. So in this change,
- Added some widget classes to the PreviewContext WHITELIST
- Manually update widget model after loading workspace since we do not attach widget listeners to the LauncherAppModel for preview.
Change-Id: I0a555b2319b2e91432dbd58289ddb66aca1384df
> Changing the lifecycle to follow other static objects in Launcher
> Removing compat interface and inlining everything to helpers
Bug: 141376165
Change-Id: I82bd5db1969101de9a7eac77f32728d70195bb35