Set the working directory before loading the config

[bjorn-ove]

When you start the editor with a directory as the first argument, or specify -w, --working-dir <path> it loads .helix/config.toml as if you didn't specify it.

This fixes issue #8469

[boofexxx]

seems like the merge has introduced a bug
if you pass a directory as the first argument then it changes the current directory to it but it still tries to open the first argument which causes opening the first argument inside of the new CWD

e.g.: hx src/ makes it change the CWD to src and opens src inside of the src so we have src/src opened

[bjorn-ove]

This is a good catch. I don't know how I missed it 😟. When the directory is changed, the later logic checks if the relative path is a directory, which now is false because the current directory has changed.

Will fix ASAP

[bjorn-ove]

Fixed in #8520