Notification appears broken on third-party repos

[dead-claudia]

Relevant discussion: https://github.com/orgs/community/discussions/139651

100% convinced it's a bug on GitHub's end.

[dead-claudia]

Disabled these workflows as emails are being sent to random people filing issues:

• https://github.com/MithrilJS/mithril.js/actions/workflows/issue-create.yml
• https://github.com/MithrilJS/docs/actions/workflows/issue-create.yml