gh-159118: Use multithreaded COM initialization in _wmi (GH-159463)

(cherry picked from commit 99799a9)

Co-authored-by: Uttam Bhadauriya <uttamsinghbhadoriya23@gmail.com>

Author: utam-1

Misc/NEWS.d/next/Windows/2026-10-15-18-45-00.gh-issue-159118.wmiMTA.rst

@@ -0,0 +1 @@
+Fix a crash (``RPC_NT_INTERNAL_ERROR``) and intermittent window class failures in :mod:`!_wmi` under high concurrency and load by initializing COM as multi-threaded (MTA) instead of apartment-threaded (STA).

PC/_wmimodule.cpp

@@ -67,7 +67,7 @@ _query_thread(LPVOID param)
     }
 
     if (SUCCEEDED(hr)) {
-        hr = CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+        hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED);
     }
 
     if (FAILED(hr)) {