stdlib: Add many missing dunder overrides (#7231)

stdlib/xmlrpc/client.pyi

@@ -83,6 +83,7 @@ class Binary:
     def __init__(self, data: bytes | None = ...) -> None: ...
     def decode(self, data: bytes) -> None: ...
     def encode(self, out: SupportsWrite[str]) -> None: ...
+    def __eq__(self, other: object) -> bool: ...
 
 def _binary(data: bytes) -> Binary: ...  # undocumented