Various improvements

[NicoPennec]

Problem

• On the People page, the "disable 2FA" button is not clickable when FIDO auth is enabled.
• The entity page should not be accessible to the Client user.
• After a new release deployment of Kitsu, the navigation can crash due to chunk loading errors.
• Some npm dependencies are outdated.
• The Kitsu bundle is too heavy on first load.

Solution

• Fix the "disable 2FA" button to include FIDO auth.
• Disable links to entity pages for client users.
• Reload the page when chunk loading errors occur after a new release deployment.
• Bump npm dependencies and migrate to ESLint v10.
• Reduce the main bundle size and implement lazy loading for some large vendor dependencies.