Add AM#forceStopPackageAsUserEvenWhenStopping

This is needed in scenarios that clients want to force stop the
application package even when the user is in a stopping state but not
completely stopped yet.

Bug: 276961198
Test: atest FrameworksServicesTests:ActivityManagerServiceTest
Test: perform passenger logout and login manual on the MD emulator
Change-Id: Ie08c87d717e5207ac4a0d84b28ecff65a75c882c