bpo-34181: Fix running Lib/test/test_typing.py as a script. (GH-8380) (GH-8385)

(cherry picked from commit 9613609)

Co-authored-by: Serhiy Storchaka <[email protected]>

Author: miss-islington

Lib/test/test_typing.py

@@ -651,9 +651,9 @@ class W(X[int]):
 
     def test_repr(self):
         self.assertEqual(repr(SimpleMapping),
-                         "<class 'test.test_typing.SimpleMapping'>")
+                         f"<class '{__name__}.SimpleMapping'>")
         self.assertEqual(repr(MySimpleMapping),
-                         "<class 'test.test_typing.MySimpleMapping'>")
+                         f"<class '{__name__}.MySimpleMapping'>")
 
     def test_chain_repr(self):
         T = TypeVar('T')