[3.14] gh-141174: Test type_repr() of Template with invalid syntax in Interpolation (GH-155661) (#155712)

gh-141174: Test `type_repr()` of `Template` with invalid syntax in `Interpolation` (GH-155661)

Test `type_repr()` of `Template` with invalid syntax in `Interpolation`
(cherry picked from commit 5cc9e46)

Co-authored-by: dr-carlos <77367421+dr-carlos@users.noreply.github.com>

Author: miss-islington

Lib/test/test_annotationlib.py

@@ -1874,6 +1874,10 @@ def nested():
             type_repr(Template("hi", Interpolation(42, "   "))),
             "Template('hi', Interpolation(42, '   ', None, ''))",
         )
+        self.assertEqual(
+            type_repr(Template("hi", Interpolation(42, "4!2"))),
+            "Template('hi', Interpolation(42, '4!2', None, ''))",
+        )
         # gh138558: perhaps in the future, we can improve this behavior:
         self.assertEqual(type_repr(Template(Interpolation(42, "99"))), "t'{99}'")