[llvm] [CMake][Windows] Fix Debug config build when using MSBuild (PR #111765)

[via llvm-commits]

wjristow wrote:

Thanks for your help and your patience on this, @chapuni.

>> Don't override `LLVM_TABLEGEN` without the reason. Use `LLVM_NATIVE_TOOLS_DIR` for the purpose.
>
> That looks very helpful. Our build-infrastructure doesn't invoke `cmake` directly, but instead does it through some other code. I'll look into that, but I'm optimistic that your `LLVM_NATIVE_TOOLS_DIR` point will be very helpful.

I've looked into this further, and I see a way to modify our build-infrastructure so that it doesn't override `LLVM_TABLEGEN`.  So I'm abandoning this pull-request.  Thanks again.

https://github.com/llvm/llvm-project/pull/111765