github-actions should not add needs-triage to issues if it already has nonstandard labels

[gonX]

Steps to Reproduce

1. Click "new issue" but do not submit the form yet
2. Set more labels than the currently offered default labels (e.g. meta)
3. Open issue

Expected Behavior

The github-actions bot should not add the needs-triage label as the issue is likely already correctly triaged.

We only use the label for helping the Triage team make sure that the issue is labeled correctly.

Note that the check should be more specific than checking if the issue owner has permissions to set labels, as I've personally intentionally omitted additional labels for a later triage.

Observed Behavior

The github-actions bot adds the needs-triage label.

Tablet Device

n/a

Diagnostic Information

n/a

Acknowledgements

• I have installed OpenTabletDriver by following its official installation instructions.
• I have checked the OpenTabletDriver Wiki and respective FAQ pages, and my issue was not covered or actually fixed.
• I have searched the existing issues and this new issue is not a duplicate of any.
• I have written a concise and meaningful title.
• I am on the latest version of OpenTabletDriver.