This change adds summary for role-based default apps preference, based
on what we have now for default apps.
Bug: 110557011
Test: atest RolesPreferenceControllerTest
Change-Id: Ic3dd84dc7ca687ea1de63a856ac3fcf679e1bda9
This change adds a temporary link in the default apps settings to
allow launching the new default apps UI in PermissionController during
the process we migrate default apps to use roles.
Bug: 110557011
Test: manually tested the UI
Change-Id: I0ac340acd5a077c74b48b28c97f517adb2084a36