Refs #35234 -- Skipped CheckConstraint system checks if not supported.

Thanks Tim Graham for the report.

Regression in 0fb104d.

django/db/models/constraints.py

@@ -200,7 +200,11 @@ def _check(self, model, connection):
                     id="models.W027",
                 )
             )
-        else:
+        elif (
+            connection.features.supports_table_check_constraints
+            or "supports_table_check_constraints"
+            not in model._meta.required_db_features
+        ):
             references = set()
             condition = self.condition
             if isinstance(condition, Q):