Fix exception trying to display moved table warnings (#23837)

If you still have an old dangling table from the 2.2 migration this
would fail. Make it more resilient and cope with both styles of moved
table name

(cherry picked from commit 4829b23)

airflow/www/views.py

@@ -835,7 +835,7 @@ def _iter_parsed_moved_data_table_names():
                 if segments[0] != settings.AIRFLOW_MOVED_TABLE_PREFIX:
                     continue
                 # Second segment is a version marker that we don't need to show.
-                yield segments[3], table_name
+                yield segments[-1], table_name
 
         if (
             permissions.ACTION_CAN_ACCESS_MENU,