Add Unused Period of 1 month to UnusedAppsViewModel

On TVs apps get hibernated after 1 month. Add 1 month unused period to reflect it with a separate category in UnusedAppsFragment.

Relnote: Improving user info message about Unused Apps Hibernation.

Bug: 251747762
Test: Locally on TV with m -j50 GooglePermissionController
Change-Id: Iadc7daf478f167db3a37bddf09de7f554a314db2
(cherry picked from commit 41c3a3d5)
Merged-In: Iadc7daf478f167db3a37bddf09de7f554a314db2
(cherry picked from commit 224a37eea3a02d1486757c8c73d9b678eadecea7)
Merged-In: Iadc7daf478f167db3a37bddf09de7f554a314db2