fix(release): ensure start_expert works if symlinked

[AlternateRT]

With this, it should now be possible to symlink start_expert anywhere (e.g. ~/.local/bin/expert).

[doorgan]

Thank you! Do we also need to update start_expert.bat for windows?

[AlternateRT]

I'm not entirely sure. It would also be impossible for me to test any update to that file as I do not use windows.

But from what I gathered by looking at the .bat files that ship with ElixirLS and Elixir v1.19 (language_server.bat and elixir.bat respectively), it might not be needed; upon inspecting those files, neither contained a mechanism to resolve a symlink.

I can't say this for certain, but I think they lack that mechanism because symlinking is a less common practice in Windows-land.

[doorgan]

We can add this for windows on a different pr if needed
Thank you! 💜

[katafrakt]

I can test Windows at some point (I have Expert set up on one), but I agree this should not block this PR.