Pass multi-instance state via LauncherActivityInfo

- Launcher needs to present multi-instance UI when apps declare
  multi-instance support.  This exposes the ability for Launcher to
  check this state for apps installed for profile users

Bug: 391611065
Flag: EXEMPT bugfix
Test: Install a multi-instance supported app for the non-primary user,
      verify that launcher can query the property state
Test: atest LauncherAppsServiceTest
Change-Id: Idb09dfb90eb2e702dcf6b9cdc8ddb02939605509