Merge "Filter package visibility in checkExistsAndEnforceCannotModifyImmutablyRestrictedPermission()." into sc-dev am: 4c2c1530 am: 695b2a1b am: 4ef9e5f2 am: f9269665

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14390030

Change-Id: Ia67669fb904cd04afdac548438bc74194b5f5fb0