Respond to force stops.

Reclaim all ARCs from an app when it's force stopped so it won't
immediately be able to do bg work. It'll regain ARCs over time in
response to various events.

Bug: 240726265
Test: manually force stop an app and check dumpsys
Change-Id: Ie8d768440f8366472a5bccbacf39fbc176f929c5