fix(dav): drop unwanted RemoteException class

[skjnldsv]

Fix #44719

[skjnldsv]

/backport to stable29

[skjnldsv]

/backport to stable28

[come-nc]

From what I can see the exception is never caught, you can directly throw \Exception instead? That would avoid confusing psalm with having the same class name in 2 files.

[skjnldsv]

done @come-nc
Took the opportunity to add more comments to the file

[backportbot]

The backport to stable28 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable28
git pull origin stable28

# Create the new backport branch
git checkout -b backport/46550/stable28

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 0e88e066

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/46550/stable28

Error: Failed to push branch backport/46550/stable28: fatal: could not read Username for 'https://github.com': No such device or address

---

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