Update mdr_pdf_parser.py

mdr_pdf_parser.py

@@ -227,6 +227,11 @@ class MDRBaseLayoutElement:
     """Base class for layout elements found on a page."""
     rect: MDRRectangle;
     fragments: list[MDROcrFragment]
+    def __eq__(self, other):
+        return self is other
+
+    def __hash__(self):
+        return id(self)
 
 
 @dataclass