fix(NcRichContenteditable): register props globally for new Tribute

[Antreesy]

☑️ Resolves

• Fix regression from fix(NcRichContenteditable): make autocomplete accessible #4904
  • documentation on https://github.com/zurb/tribute#a-collection claims props such as allowSpaces and menuContainer to be a part of Collection, although they should be registered globally, if there are a collections array
  • modify initial styles for root element, so it will be rendered outside of viewport and won't break layout

🖼️ Screenshots

🏚️ Before	🏡 After

🏚️ Before

Screencast.from.20.02.2024.12.35.34.webm

🏡 After

Screencast.from.20.02.2024.12.59.51.webm

🚧 Tasks

• Check other props

🏁 Checklist

• ⛑️ Tests are included or are not applicable
• 📘 Component documentation has been extended, updated or is not applicable
• 3️⃣ Backport to next requested with a Vue 3 upgrade

[Antreesy]

/backport to next