[llvm] [Orc][examples] Fix lljit-with-remote-debugging test failure (PR #74764)

[Thomas Preud'homme via llvm-commits]

RoboTux wrote:

> 
> I missed this earlier -- that's a good idea. `LLJIT` seems like the right place to handle this: `addIRModule` can check for an empty triple and replace it with the triple reported through the `ExecutionSession`.

That's been done by Stefan in d86a93782f4ea476b7fa6751f849fb4ada3df852.

https://github.com/llvm/llvm-project/pull/74764