gh-85470: Delay load ole32.dll in the _ctypes module

ole32.dll pulls in user32.dll, which makes the system treat the process as
a GUI process and stop sending logoff and shutdown console control events
to it.  It is only needed for ProgIDFromCLSID() when formatting a COM error.

Author: serhiy-storchaka

Misc/NEWS.d/next/Windows/2026-08-09-15-40-00.gh-issue-85470.Lm4Xt9.rst

@@ -0,0 +1,4 @@
+Importing :mod:`ctypes` on Windows no longer loads ``user32.dll``, which
+made the system treat the process as a GUI process and stop sending logoff
+and shutdown console control events to it.  ``ole32.dll``, which pulled
+``user32.dll`` in, is now delay loaded.

PCbuild/_ctypes.vcxproj

@@ -98,6 +98,7 @@
     </ClCompile>
     <Link>
       <AdditionalOptions>/EXPORT:DllGetClassObject,PRIVATE /EXPORT:DllCanUnloadNow,PRIVATE %(AdditionalOptions)</AdditionalOptions>
+      <DelayLoadDLLs>ole32.dll</DelayLoadDLLs>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>