fix: resolve file version conflict during restore

[AIlkiv]

📝 Summary

• Resolves: #

🖼️ Screenshots

When restoring a previous version, there is always a conflict. This fix removes the conflict for situations where there were no unsaved changes.

I made this fix via hook. So that you can backport to version 30.

The next step is to make a new PR for version 32, which will work through Event (I'm waiting for approval nextcloud/server#50990)

🚧 TODO

• ...

🏁 Checklist

• Code is properly formatted (npm run lint / npm run stylelint / composer run cs:check)
• Sign-off message is added to all commits
• Tests (unit, integration and/or end-to-end) passing and the changes are covered with tests
• Documentation (README or documentation) has been updated or is not required

[max-nextcloud]

Thanks a lot @AIlkiv !
This has been bothering me as well. So far I was thinking about creating a frontend solution - but this seems far more simple.

I'm busy with other things for the rest of the week. But looking forward to try it out next week.

[AIlkiv]

@max-nextcloud Hello. Just a reminder.

[juliusknorr]

This looks good to me. @max-nextcloud Please still check I have not tried it yet.

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[max-nextcloud]

Code looks good. Also gave it a try. Works really nicely.

[max-nextcloud]

/backport to stable31

[max-nextcloud]

/backport to stable30

[max-nextcloud]

/backport to stable29