fixed test for lint

Ref: https://github.com/zopefoundation/Products.CMFCore/actions/runs/5850301279/job/15859553938#step:6:18

src/Products/CMFCore/tests/test_ActionProviderBase.py

@@ -49,7 +49,7 @@ def clone(self):
 
     def __eq__(self, other):
         return (
-            type(self) == type(other) and
+            isinstance(self, type(other)) and
             self.__class__ == other.__class__ and
             self.value == other.value
         )