feat(ui) :version badge inside the Kestra menu

[rk192324217]

Closes #19198

Description

Moves the version badge from the Admin row into the Kestra user menu, as proposed in the issue discussion.

The version entry preserves the existing version information popover and displays:

1. Version
2. Commit ID
3. Commit date

The version badge is now displayed inside the user menu as v2.1.0.

Expected Behaviour

1. The version badge is displayed inside the Kestra user menu.
2. Hovering over the version v2.1.0 opens the version information popover.
3. The popover displays the version, commit ID, and commit date.

Kesta.issue.19198.mp4

Frontend Checklist

• Type checking passes (npm run check:types)
• Code builds without errors (npm run build)
• Unit tests pass (npm run test:unit)
• Translations are complete if en.json changed (npm run translations:check reports no missing, extra, or stale keys)
• Screenshots or video recordings attached showing the UI changes

[kestrabot]

Welcome to Kestra 👋

Hey @rk192324217, thanks for opening your first pull request in this repository - we really appreciate it! ❤️

Questions along the way? Ask us on Slack.

Thanks for all the efforts so far! 🍀