DO NOT MERGE Chk QUERY_ALL_PACKAGES when resolving

When resolving intents, check whether QUERY_ALL_PACKAGES permission was
granted, as well as whether the caller is a system process, to determine
whether filtering may occur.

This allows prefered activity records to be deleted by non-system
processes if they have QUERY_ALL_PACKAGES permission.

Before this change, configuring a custom activity resolver doesn't work
properly because it's not allowed to delete the record of the last
chosen app before writing a new record.

Test: Create a custom activity resolver, choose an app just once, choose
      another app next time, verify it defaults to the other app after
      that.
Bug: 173543124
Change-Id: If4dfea0374352b5e903d15e87e90baf012abf40b