Saving a foreign score online with "replace existing score" fails with useless error message and only after having generated the audio

Issue type

Cloud issue (opening, saving, logging in/out)

Description with steps to reproduce

1. Download a score from musescore.com that isn't your's.
2. Upload it to musescore,com via File > Publish on muserscore.com (private or not listed, we don't want to steal, do we ;-))
3. Keep the box "replace existing score" ticked (it is ticked by default)
4. Wait until the audio got generated (can take quite long, like 5 minutes or longer).

Actual behavior:

Only after the (long process of) audio creation you get an error message and that error doesn't even tell you the reason for the failure but asks you to try again later (which won't help at all) or seek help on musescore.org instead (unlikely to help on a musescore.com issue and without a proper error message).

Expected behavoir, do either of:

• The score does get upload, of course without overwriting the foreign score, but as a new score in your account (that seems the Mu3 behavoir).
• Get an error message reg. 'Permission denied' before the (long process of) audio creation, i.e. as early as possible and as clearly as possible too.
• Have that box to replace existing unticked, for foreign scores (and for those only), this could/should get combined with either of the above.

Give me back the 5+ minutes of wasted lifetime...

Supporting files, videos and screenshots

Tested with the score from https://musescore.org/en/node/374084

Error message:

(there's a translation glitch in German, musescore.com vs. musescore.org, fixed now, alothough that button really should send you to musescore.com. Would match a corresponding error for uploading sound to audio.com)

What is the latest version of MuseScore Studio where this issue is present?

4.4.4 for sure

Regression

Yes, this used to work in MuseScore 3.x and now is broken

Operating system

Windows 11, but I don't see how that would matter

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible