Updates for Python 3.14rc1 (#14446)

stdlib/argparse.pyi

@@ -281,7 +281,7 @@ class HelpFormatter:
 
     if sys.version_info >= (3, 14):
         def __init__(
-            self, prog: str, indent_increment: int = 2, max_help_position: int = 24, width: int | None = None, color: bool = False
+            self, prog: str, indent_increment: int = 2, max_help_position: int = 24, width: int | None = None, color: bool = True
         ) -> None: ...
     else:
         def __init__(