[RuntimeEnv] Fixes spaces in paths causing failures on Windows (#25659)
[RuntimeEnv] Fixes spaces in paths causing failures on Windows (#25659)

This is a follow-up to the previous PR (GitHub did some funky things when I did a rebase, so I had to create a new one)

On Windows systems, the `exec_worker` method may fail due to spaces being present in arguments that are file paths. This addresses said issue.
ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray