Add vite file watcher ignore config

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/139089



Merged-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Approved-by: Toon Claes <toon@gitlab.com>
Approved-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Approved-by: Alper Akgun <aakgun@gitlab.com>
Reviewed-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Reviewed-by: Thomas Hutterer <thutterer@gitlab.com>
Co-authored-by: Thomas Hutterer <thutterer@gitlab.com>