Fix availability of some constants for Windows (#10818)

stdlib/mmap.pyi

@@ -28,7 +28,7 @@ if sys.platform != "win32":
     PROT_READ: int
     PROT_WRITE: int
 
-    PAGESIZE: int
+PAGESIZE: int
 
 class mmap(Iterable[int], Sized):
     if sys.platform == "win32":

stdlib/msvcrt.pyi

@@ -1,8 +1,9 @@
 import sys
-from typing_extensions import Literal
+from typing_extensions import Final, Literal
 
 # This module is only available on Windows
 if sys.platform == "win32":
+    CRT_ASSEMBLY_VERSION: Final[str]
     LK_UNLCK: Literal[0]
     LK_LOCK: Literal[1]
     LK_NBLCK: Literal[2]

stdlib/signal.pyi

@@ -10,10 +10,8 @@ NSIG: int
 
 class Signals(IntEnum):
     SIGABRT: int
-    SIGEMT: int
     SIGFPE: int
     SIGILL: int
-    SIGINFO: int
     SIGINT: int
     SIGSEGV: int
     SIGTERM: int
@@ -23,6 +21,8 @@ class Signals(IntEnum):
         CTRL_C_EVENT: int
         CTRL_BREAK_EVENT: int
     else:
+        SIGEMT: int
+        SIGINFO: int
         SIGALRM: int
         SIGBUS: int
         SIGCHLD: int
@@ -77,10 +77,8 @@ else:
     def signal(__signalnum: _SIGNUM, __handler: _HANDLER) -> _HANDLER: ...
 
 SIGABRT: Signals
-SIGEMT: Signals
 SIGFPE: Signals
 SIGILL: Signals
-SIGINFO: Signals
 SIGINT: Signals
 SIGSEGV: Signals
 SIGTERM: Signals
@@ -90,6 +88,8 @@ if sys.platform == "win32":
     CTRL_C_EVENT: Signals
     CTRL_BREAK_EVENT: Signals
 else:
+    SIGINFO: Signals
+    SIGEMT: Signals
     SIGALRM: Signals
     SIGBUS: Signals
     SIGCHLD: Signals

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]