Restricts implicit URI grants on activity launches

Upgraded metrics for more effective analysis.

Bug: 295238578
Test: atest CtsContentTestCases:android.content.cts.ActivityLaunchUriPermissionTest
Flag: android.security.implicit_uri_grants_restricted_for_sendmultiple_imagecapture_actions
Flag: android.security.implicit_uri_grants_restricted_for_send_action

Change-Id: I4c8bcf29befce5b52255a94b91792bb7380f76f8