fix(PresenterOverlay): do not move component to negative values

[Antreesy]

☑️ Resolves

• Fix placing presenter video out of visible bounds while screensharing
• Parent size is recalculated after mounting, which results in smaller parentHeight than actual -> moveVertically pushes it behind the CallView

🖌️ UI Checklist

🖼️ Screenshots / Screencasts

🏚️ Before

2025-02-13_10h07_46.mp4

🏡 After

2025-02-13_10h05_46.mp4

🏁 Checklist

• 🌏 Tested with different browsers / clients:
  • Chromium (Chrome / Edge / Opera / Brave)
  • Firefox
  • Safari
  • Talk Desktop
  • Not risky to browser differences / client
• 🖌️ Design was reviewed, approved or inspired by the design team
• ⛑️ Tests are included or not possible
• 📗 User documentation in https://github.com/nextcloud/documentation/tree/master/user_manual/talk has been updated or is not required

[Antreesy]

/backport to stable31

[ShGKme]

Is it guaranteed that the value is initially (before update trigger) are in the valid range?

[Antreesy]

Is it guaranteed that the value is initially (before update trigger) are in the valid range?

I don't think so. Caught it in the moment of transition (Grid component), believe, that issue might originate from here: