Add MAP_STACK to mmap module (#10792)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

stdlib/mmap.pyi

@@ -16,6 +16,8 @@ if sys.platform == "linux":
     MAP_EXECUTABLE: int
     if sys.version_info >= (3, 10):
         MAP_POPULATE: int
+if sys.version_info >= (3, 11) and sys.platform != "win32" and sys.platform != "darwin":
+    MAP_STACK: int
 
 if sys.platform != "win32":
     MAP_ANON: int

tests/stubtest_allowlists/linux-py311.txt

@@ -1,5 +1,4 @@
 _?curses.color_pair
-mmap.MAP_STACK
 (os|posix).sendfile
 signal.sigtimedwait
 signal.sigwaitinfo

tests/stubtest_allowlists/linux-py312.txt

@@ -2,7 +2,6 @@ _?curses.color_pair
 _posixsubprocess.fork_exec
 (os|posix).sendfile
 (os|posix).setns
-mmap.MAP_STACK
 resource.prlimit
 signal.sigtimedwait
 signal.sigwaitinfo