fix(scan): handle race condition for tempDir removal

[pi0]

When calling vite.build rapidly, there is a race condition situation where directory is already removed already by previous build (nuxt-vite issue)

[nrayburn-tech]

It is preferred to try and remove the directory and just catch the error. This ensures that nothing happens between the check for existence and the attempt to remove.
It is sync here, so nothing will happen in the JavaScript to change the file, but it is possible something outside of the JavaScript can happen. (Unlikely, but possible.)
https://nodejs.org/api/fs.html#fs_fs_exists_path_callback