[llvm] [llvm] Disable HandleLLVMOptions in runtimes mode (PR #73031)

[Joseph Huber via llvm-commits]

jhuber6 wrote:

> If you rebase onto `main`, I think this should be unblocked from the libc++ side now.

I'll give it a shot.

https://github.com/llvm/llvm-project/pull/73031