[3.15] gh-156676: Skip test_pyinit_function_raises_exception for other implementations (GH-156684) (#156686)

gh-156676: Skip `test_pyinit_function_raises_exception` for other implementations (GH-156684)

See also RustPython/RustPython#8605
(cherry picked from commit 03503dc)

Co-authored-by: sai <internoffl@gmail.com>

Author: miss-islington

Lib/test/test_import/__init__.py

@@ -2541,6 +2541,7 @@ def test_disallowed_reimport(self):
         excsnap = _interpreters.run_string(interpid, script)
         self.assertIsNot(excsnap, None)
 
+    @cpython_only
     @requires_subinterpreters
     def test_pyinit_function_raises_exception(self):
         # gh-144601: PyInit functions that raised exceptions would cause a