Use import instead of re-definition of constants in subprocess (#7065)

stdlib/subprocess.pyi

@@ -1043,22 +1043,27 @@ if sys.platform == "win32":
         wShowWindow: int
         if sys.version_info >= (3, 7):
             lpAttributeList: Mapping[str, Any]
-    STD_INPUT_HANDLE: Any
-    STD_OUTPUT_HANDLE: Any
-    STD_ERROR_HANDLE: Any
-    SW_HIDE: int
-    STARTF_USESTDHANDLES: int
-    STARTF_USESHOWWINDOW: int
-    CREATE_NEW_CONSOLE: int
-    CREATE_NEW_PROCESS_GROUP: int
+    from _winapi import (
+        CREATE_NEW_CONSOLE as CREATE_NEW_CONSOLE,
+        CREATE_NEW_PROCESS_GROUP as CREATE_NEW_PROCESS_GROUP,
+        STARTF_USESHOWWINDOW as STARTF_USESHOWWINDOW,
+        STARTF_USESTDHANDLES as STARTF_USESTDHANDLES,
+        STD_ERROR_HANDLE as STD_ERROR_HANDLE,
+        STD_INPUT_HANDLE as STD_INPUT_HANDLE,
+        STD_OUTPUT_HANDLE as STD_OUTPUT_HANDLE,
+        SW_HIDE as SW_HIDE,
+    )
+
     if sys.version_info >= (3, 7):
-        ABOVE_NORMAL_PRIORITY_CLASS: int
-        BELOW_NORMAL_PRIORITY_CLASS: int
-        HIGH_PRIORITY_CLASS: int
-        IDLE_PRIORITY_CLASS: int
-        NORMAL_PRIORITY_CLASS: int
-        REALTIME_PRIORITY_CLASS: int
-        CREATE_NO_WINDOW: int
-        DETACHED_PROCESS: int
-        CREATE_DEFAULT_ERROR_MODE: int
-        CREATE_BREAKAWAY_FROM_JOB: int
+        from _winapi import (
+            ABOVE_NORMAL_PRIORITY_CLASS as ABOVE_NORMAL_PRIORITY_CLASS,
+            BELOW_NORMAL_PRIORITY_CLASS as BELOW_NORMAL_PRIORITY_CLASS,
+            CREATE_BREAKAWAY_FROM_JOB as CREATE_BREAKAWAY_FROM_JOB,
+            CREATE_DEFAULT_ERROR_MODE as CREATE_DEFAULT_ERROR_MODE,
+            CREATE_NO_WINDOW as CREATE_NO_WINDOW,
+            DETACHED_PROCESS as DETACHED_PROCESS,
+            HIGH_PRIORITY_CLASS as HIGH_PRIORITY_CLASS,
+            IDLE_PRIORITY_CLASS as IDLE_PRIORITY_CLASS,
+            NORMAL_PRIORITY_CLASS as NORMAL_PRIORITY_CLASS,
+            REALTIME_PRIORITY_CLASS as REALTIME_PRIORITY_CLASS,
+        )