Don't send BOOT_COMPLETED to app in restricted backup mode

If the app is being started for a backup or restore operation,
don't send it the BOOT_COMPLETED broadcasts even if currently
in the package STOPPED state. This prevents some apps from
crashing because they don't properly handle getting broadcasts
during a backup or restore.

Bug: 362516211
Test: Install a previously backed up app and ensure restore works
Flag: EXEMPT bugfix

Change-Id: Iddb40c1398f49dd72cbcb730b9cfb48aaca98e2c