Fix new final decorator test.

Author: mauvilsa

jsonargparse/_optionals.py

@@ -71,9 +71,10 @@ class FinalClass:
     return getattr(FinalClass, "__final__", False)  # __final__ available in stdlib from python 3.11
 
 
+fallback_final = final
 stdlib_final = typing_extensions_import("final")
 if stdlib_final and is_compatible_final(stdlib_final) and "SPHINX_BUILD" not in os.environ:
-    final = stdlib_final  # noqa: F811
+    final = stdlib_final
 
 
 def import_typeshed_client():

jsonargparse_tests/test_optionals.py

@@ -8,7 +8,7 @@
 from jsonargparse._optionals import (
     _get_config_read_mode,
     docstring_parser_support,
-    final,
+    fallback_final,
     fsspec_support,
     get_docstring_parse_options,
     import_docstring_parser,
@@ -185,7 +185,7 @@ def test_config_read_mode_fsspec_support_false():
 # final decorator tests
 
 
-@final
+@fallback_final
 class FinalClass:
     pass