refactor(user_status): migrate to Vue 3

[ShGKme]

• Part of 📦 ❗️Vue 3 Migration - NC33 Roadmap #55428

Summary

• Prerequirement: build: correct render build url in Vite for chunks/assets in dist #56554
• Migrates the app to Vue 3
• Vue 2 compatible changes are done in an individual commit, backportable
• Dirty workarounds:
  • AccountMenuEntry is not fully compatible with Vue 3, expecting menu items to be replaced when mounted in place, not to be mounted inside the entry
    • Requires changes in core API to support it
  • User statuses are copied from user_status to core to avoid illegal import (core should not depend on an app)
  • Some box-sizing: border-box added

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

[ShGKme]

/compile

[szaimen]

🐘