Use setIncludedPackages() API to send a single broadcast.

Instead of broadcasting PACKAGE_CHANGED to each target package
individually, send one consolidated package_changed broadcast.

Bug: 433394697
Test: atest services/tests/PackageManagerServiceTests/server/src/com/android/server/pm/BroadcastHelperTest.java
Test: atest tests/tests/content/src/android/content/pm/cts/PackageChangedBroadcastTest.java
Flag: android.content.pm.consolidate_package_changed_broadcasts
Change-Id: I4af9c5a4ffaf63c2da56fdd8069541e02bb073e7