OpenConsole as conhost.exe crashes from SYSTEM account

[SEt-t]

Windows Terminal version

No response

Windows build number

10.0.19045.6456

Other Software

No response

Steps to reproduce

Replace system conhost.exe, run profiling in Visual Studio.

Expected Behavior

No response

Actual Behavior

conhost crashes due to uncaught exception. Creating ITfCategoryMgr here fails

terminal/src/tsf/Implementation.cpp

Line 73 in 224ac9d

_categoryMgr = wil::CoCreateInstance<ITfCategoryMgr>(CLSID_TF_CategoryMgr, CLSCTX_INPROC_SERVER);

and throws the exception.

Gracefully handling that here

terminal/src/tsf/Handle.cpp

Line 15 in 224ac9d

handle._impl->Initialize();

as assigning nullptr to handle._impl solves the problem.

I can create a pull request if you want.

[DHowett]

That would be helpful. Thank you.