[llvm] [Orc] Fix process-symbols setup in LLJITBuilder for out-of-process case (PR #76244)

[Stefan Gränitz via llvm-commits]

weliveindetail wrote:

Thanks for reporting! Right, I can reproduce this. Let me check if I can fix this quickly, or if we need to revert.

https://github.com/llvm/llvm-project/pull/76244