GH-111801: set a lower recursion limit for test_infinitely_many_bases() in test_isinstance

Author: brettcannon

Lib/test/test_isinstance.py

@@ -344,7 +344,7 @@ class B:
                     pass
                 A.__getattr__ = B.__getattr__ = X.__getattr__
                 return (A(), B())
-        with support.infinite_recursion():
+        with support.infinite_recursion(25):
             self.assertRaises(RecursionError, issubclass, X(), int)