fix(Classifier): Check cores against int value

[marcelklehr]

fixes #1370

[marcelklehr]

/backport to stable10

[marcelklehr]

/backport to stable9

[marcelklehr]

/backport to stable8

[backportbot]

The backport to stable8 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable8
git pull origin stable8

# Create the new backport branch
git checkout -b backport/1373/stable8

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 56522c38

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/1373/stable8

Error: Failed to check for changes with origin/stable8: No changes found in backport branch

---

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