Don't allow non-system uids to use "android" as calling package.

Bug: 310632322
Test: atest ./BroadcastsSecurityTest/src/android/app/cts/broadcasts/BroadcastRegistrationTest.java
Flag: EXEMPT bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f9619f7ab4496bf98b42f00c622c94e60c898cd1)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:da489e4fb5c9f8f322538fb6877f971856e7787e)
Merged-In: I87517e9b116e5c6ca4ba05729139455c09a31d53
Change-Id: I87517e9b116e5c6ca4ba05729139455c09a31d53