Verify non-embeddable activity start cross-UID

Verify that launching a non-embeddable activity in an
embedded container will not be allowed, and the activity
will be launched in full task bounds instead, outside of
the task fragment.

Bug: 197364677
Test: ActivityEmbeddingCrossUidTests#testUntrustedCrossUidActivityEmbedding_notAllowedForNonEmbeddable
Change-Id: Ifa91e23b17fc305676a35ae8fb23bc2e256227e1
5 files changed