Remove custom lifecycle transitions for onNewIntent callback

Rebased from ag/3785659. This CL switches to using post-execution
state resolution for new intent delivery. Also removes some
unnecessary code needed for old logic.

Bug: 65236456
Bug: 77974794
Test: atest ActivityLifecycleTests
Change-Id: I734ad50de498cd2a6b9514c8ef6cb1eeb08e4ec5