Messaging: Use ActivityResultContracts for media and contacts

Instead of handling showing and picking the media ourselves,
use existing AcitivityResultContracts to pick images, videos
or contacts

Change-Id: I20079ad94882cc6bbfeae8d57ca0e4aa30612c01

src/com/android/messaging/ui/conversationlist/AbstractConversationListActivity.java

@@ -90,11 +90,6 @@ public abstract class AbstractConversationListActivity extends BugleActionBarAct
         return isInConversationListSelectMode();
     }
 
-    @SuppressWarnings("MissingSuperCall") // TODO: fix me
-    @Override
-    public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
-    }
-
     @Override
     public void onActionBarDelete(final Collection<SelectedConversation> conversations) {
         if (!PhoneUtils.getDefault().isDefaultSmsApp()) {