PR check uses `only-issue-types`

[kaaax0815]

Description:
When checking PRs I see following message

Skipping this pull request because its type ('undefined') is not in onlyIssueTypes (bug)

Action version:
actions/stale@v10

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Repro steps:
See any Pull Request in https://github.com/wg-easy/wg-easy/actions/runs/23892939161/job/69670507982

Expected behavior:
PRs should completely ignore the only-issue-types config, as its only meant for issues

Actual behavior:
PRs check that option

[gowridurgad]

Hello @kaaax0815,
Thank you for creating this issue. We will investigate it and get back to you as soon as we have some feedback.