@EnforcePermission migrations - MediaProjectionManagerService

Migrates call sites to use the @EnforcePermission annotation
instead of manually checking permissions.

These are fully behavior-preserving changes that can be identified by
Android Lint (see SimpleManualPermissionEnforcementDetector)

Bug: 265014041
Test: TH
Change-Id: Ie52c959b5cf15bec8800a81a0ffca1b44d6bd659