[Bug] Talk fails to upload files over HTTP (crypto.randomUUID is not a function) #18733

Actual behaviour

Users are experiencing errors and failures when trying to attach and send files directly through the web chat interface.

Investigation results

• TypeError: crypto.randomUUID is not a function
• According to developer.mozilla.org/en-US/docs/Web/API/Crypto/randomUUID the function is available in HTTPS
• Fail if server is running strictly over HTTP
• Since we potentially support http pages for chatting (camera and mic access does not work, so no calls), we might fix that with a fallback at some point

Extracted from #18415