Make sure callingPackage belongs to callingUid when checking BG-FGS restrictions.

This is to stop spoofed packageName to pretend to be allowListed
packageName so it can bypass the BG-FGS restriction. This applies to
both BG-FGS while-in-use restriction and BG-FGS-start restriction
since these two restrictions are related.

Bug: 216695100
Bug: 215003903
Test: atest cts/tests/app/src/android/app/cts/
Change-Id: Ic14fc331a9b5fbdbcfe6e54a31c8b765513bfd89
Merged-In: Ic14fc331a9b5fbdbcfe6e54a31c8b765513bfd89
(cherry picked from commit eef20391ce4d15d4508dc295cb338954a7c69de7)
Merged-In: Ic14fc331a9b5fbdbcfe6e54a31c8b765513bfd89
1 file changed