fix(call): reduce redundant flags update

[Antreesy]

☑️ Resolves

• do not set redundant requests on input device change
  -  client briefly stops previous track and requesting new one. During that window updateCallFlags might be triggered, as if user has completely disabled the camera and back
  • add a grace period of 1 second if flags bitmask goes in direction of removing bits
    fix last frozen frame leaking after device change
  • when video track reassigned (change camera), connection shortly abrupts, call flags with no video being sent twice, and on reconnect video tile still holds reference to previos stream object (frozen last frame).
  • re-attach of video stream fixes that

AI (if applicable)

• The content of this PR was partly or fully generated using AI

🖌️ UI Checklist

🖼️ Screenshots / Screencasts

🏚️ Before	🏡 After
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🚧 Tasks

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🏁 Checklist

• 🌏 Tested with different browsers / clients:
  • Chromium (Chrome / Edge / Opera / Brave)
  • Firefox
  • Safari
  • Talk Desktop
  • Integrations with Files sidebar and other apps
  • 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