order results of the uniqueness constraint query (#6459)

Author: ajtmccarty

backend/infrahub/core/validators/uniqueness/query.py

@@ -225,6 +225,13 @@ async def query_init(self, db: InfrahubDatabase, **kwargs: Any) -> None:  # noqa
             attr_name,
             attr_value,
             relationship_identifier
+        ORDER BY
+            node_id,
+            deepest_branch_name,
+            node_count,
+            attr_name,
+            attr_value,
+            relationship_identifier
         """ % {
             "select_subqueries_str": select_subqueries_str,
             "branch_filter": branch_filter,