      can_release_savepoints = True
      atomic_transactions = False
      supports_column_check_constraints = False
      can_clone_databases = True
  
      @cached_property
      def _mysql_storage_engine(self):
          "Internal method used in Django tests. Don't rely on this from your code"
 
</s> remove     @skipUnlessDBFeature("has_native_duration_field")
 </s> add     @skipUnlessDBFeature('supports_temporal_subtraction')
    supports_temporal_subtraction = True
      can_release_savepoints = True
      atomic_transactions = False
      supports_column_check_constraints = False
      can_clone_databases = True
    supports_temporal_subtraction = True
  
      @cached_property
      def _mysql_storage_engine(self):
          "Internal method used in Django tests. Don't rely on this from your code"
keep keep keep add keep keep keep keep
 Fixed #24793 -- Unified temporal difference support. 
django/db/backends/mysql/features.py