Reduce Data Saver Settings launch time

- The Unrestricted data need to take a long time to load from ApplicationsState.loader (more then 256ms)

- Load Unrestricted data after Settings launched

Bug: 227863469
Test: manual test, analyze results with perfetto UI.
Change-Id: I5e49a2b0f2b563b426354f4d2e6e650dcc02c98b