[3.13] gh-155485: Skip test_pyexpat.test_subparser_inherits_reparse_deferral when Expat < 2.6.0 (GH-155554) (#155573)

(cherry picked from commit 76d556e)

Assisted-By: Claude Opus 4.6
Co-authored-by: Miro Hrončok <miro@hroncok.cz>
Co-authored-by: Stan Ulbrych <stan@python.org>

Author: 3 people

Lib/test/test_pyexpat.py

@@ -952,6 +952,9 @@ def test_parent_parser_outlives_its_subparsers__chain(self):
         del parser
         del subparser
 
+    # gh-155485: GetReparseDeferralEnabled always returns False with Expat <2.6.0.
+    @unittest.skipIf(not expat.ParserCreate().GetReparseDeferralEnabled(),
+                     "requires Python compiled with Expat >= 2.6.0")
     def test_subparser_inherits_reparse_deferral(self):
         for enabled in (True, False):
             parser = expat.ParserCreate()