Draft: Enable vite by default

What does this merge request do and why?

This enables Vite by default in GDK.

How to set up and validate locally

1. Remove vite.enabled and webpack.enabled from your gdk.yml
2. Run gdk reconfigure
3. Run gdk start
4. See that vite is started instead of webpack
5. Open your local GitLab instance in your browser
6. Navigate around a bit
7. See that it works

Impacted categories

The following categories relate to this merge request:

• gdk-reliability - e.g. When a GDK action fails to complete.
• gdk-usability - e.g. Improvements or suggestions around how the GDK functions.
• gdk-performance - e.g. When a GDK action is slow or times out.

Merge request checklist

• This change is backward compatible. If not, please include steps to communicate to our users.
• Tests added for new functionality. If not, please raise an issue to follow-up.
• Documentation added/updated, if needed.
• Announcement added, if change is notable.
• gdk doctor test added, if needed.
• Add the ~highlight label if this MR should be included in the CHANGELOG.md.