Verify apps cannot receive ACTION_SNOOZE_WARNING broadcast.

Bug: 177931370
Test: atest tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
Ignore-AOSP-First: Platform changes related to this are not in AOSP yet.
Change-Id: I6d525c4d88ba01838d51a873251593281b628898
Merged-In: I6d525c4d88ba01838d51a873251593281b628898
Merged-In: I19b6b09febeb62867cd3d26246b2b3b46b9422c6
Merged-In: I89d4791fddb419342e9bd026d96fa37c4273c62e
Merged-In: Iacc33d5eb7b70b4f2984ff073c3f7003951af6e6
Merged-In: If8c54ca1e51eb6b587c70e8d218f9b90c7ad4c8e
11 files changed