Fix availability of some constants for Windows (#10818)

stdlib/winsound.pyi

@@ -4,6 +4,7 @@ from typing import overload
 from typing_extensions import Literal
 
 if sys.platform == "win32":
+    SND_APPLICATION: Literal[128]
     SND_FILENAME: Literal[131072]
     SND_ALIAS: Literal[65536]
     SND_LOOP: Literal[8]