Add sourceForLogging to uploadMediaFromEditor

This one has a hardcoded value since, as the name implies, it is called from a
few places but only from the Editor, which should be enough for the "source"
identification.

WordPress/src/main/java/org/wordpress/android/ui/uploads/UploadService.java

@@ -420,6 +420,7 @@ public static void uploadMediaFromEditor(Context context, @NonNull ArrayList<Med
         Intent intent = new Intent(context, UploadService.class);
         intent.putExtra(UploadService.KEY_MEDIA_LIST, mediaList);
         intent.putExtra(UploadService.KEY_UPLOAD_MEDIA_FROM_EDITOR, true);
+        intent.putExtra(KEY_SOURCE_FOR_LOGGING, "UploadService#uploadMediaFromEditor");
         context.startService(intent);
     }