[stdlib] Add interrupt method for multiprocessing.Process (#15064)

Author: guoci

stdlib/@tests/stubtest_allowlists/py314.txt

@@ -11,7 +11,6 @@ multiprocessing.managers._BaseDictProxy.__or__
 multiprocessing.managers._BaseDictProxy.__reversed__
 multiprocessing.managers._BaseDictProxy.__ror__
 multiprocessing.managers._BaseDictProxy.fromkeys
-multiprocessing.process.BaseProcess.interrupt
 
 
 # =========================

stdlib/multiprocessing/process.pyi

@@ -1,3 +1,4 @@
+import sys
 from collections.abc import Callable, Iterable, Mapping
 from typing import Any
 
@@ -20,6 +21,9 @@ class BaseProcess:
     ) -> None: ...
     def run(self) -> None: ...
     def start(self) -> None: ...
+    if sys.version_info >= (3, 14):
+        def interrupt(self) -> None: ...
+
     def terminate(self) -> None: ...
     def kill(self) -> None: ...
     def close(self) -> None: ...