cast.h return_value_policy_override _clif_automatic (#4364)

include/pybind11/cast.h

@@ -1042,6 +1042,7 @@ struct return_value_policy_override<
                         void>> {
     static return_value_policy policy(return_value_policy p) {
         return !std::is_lvalue_reference<Return>::value && !std::is_pointer<Return>::value
+                       && p != return_value_policy::_clif_automatic
                    ? return_value_policy::move
                    : p;
     }