DO NOT MERGE Isolated processes must fail registering BRs.

Broadcast Receivers should not be allowed to be registered by
isolated processes.

Bug: b/263358101
Test: atest SdkSandboxRestrictionsHostTest
Change-Id: I5bb2ee3ce8a447105a18851fdffa5a769cc3fe49
(cherry picked from commit 43b8a91b)