fix(files_versions): wait for version to be created before setting metadata

[susnux]

• Partly related to [Bug]: Files Versions: Did expect one result but found none when executing: query "SELECT * FROM *PREFIX*files_versions WHERE (file_id = :dcValue1) AND (timestamp = :dcValue2)"; #41174

Summary

If a new file is created then:

1. a version is created
2. the author is set in the meta data

those two are done in separate event listeners with the same priority.
In some situations they are sorted in such a way that 2 is executed before 1 and causing an issue due to version not found for update.
As 2 always needs to be done after 1 we need to reduce the priority of the second event listener.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[susnux]

/backport to stable30

[susnux]

/backport to stable31

[susnux]

/backport to stable29

[backportbot]

The backport to stable29 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable29
git pull origin stable29

# Create the new backport branch
git checkout -b backport/52369/stable29

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 2020760f

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/52369/stable29

Error: Failed to check for changes with origin/stable29: No changes found in backport branch

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[backportbot]

The backport to stable31 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable31
git pull origin stable31

# Create the new backport branch
git checkout -b backport/52369/stable31

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 2020760f

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/52369/stable31

Error: Failed to check for changes with origin/stable31: No changes found in backport branch

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[backportbot]

The backport to stable30 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable30
git pull origin stable30

# Create the new backport branch
git checkout -b backport/52369/stable30

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 2020760f

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/52369/stable30

Error: Failed to check for changes with origin/stable30: No changes found in backport branch

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.