Ignore activity lifecycle requests without matching client records.

Previously, changes were made to finish destroyed activities. This
prevented the code sending lifecycle requests to a non-existent
client record. However, there are scenarios where an activity can
be destroyed without being finished. Finishing these activities will
lead to side effects, such as the activity not being in history and
therefore not restored when navigated back to.

This changelist unlinks finishing from setting an activity's state to
destroyed. For now, we will suppress lifecycle requests client side
without matching records.

Fixes: 74403650
Fixes: 74409828
Bug: 71506345
Test: enable don't keep activities. navigate back and forth
Test: atest CtsActivityManagerDeviceTestCases:ActivityLifecycleTests#testRestoreFromKill
Test: atest CtsActivityManagerDeviceTestCases:ActivityLifecycleTests#testPausedWhenRecreatedFromInNonFocusedStack
Change-Id: I1b76a4758c3be27dc30ecac5ee56949a5b173754