[Test] spec/mailers/notify_spec.rb | Notify for a project items that are noteable, the email for a diff discussion note on a commit behaves like an email for a note on a diff discussion is sent to the given recipient as the author
### Test metadata
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| Field | Value |
| ------ | ------ |
| File URL | [`spec/mailers/notify_spec.rb#L1518`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/spec/mailers/notify_spec.rb#L1518) |
| Filename | `spec/mailers/notify_spec.rb` |
| Description | `Notify for a project items that are noteable, the email for a diff discussion note on a commit behaves like an email for a note on a diff discussion is sent to the given recipient as the author` |
| Test level | `integration` |
| Hash | `3d9ef24fcee1e321324fd2a00d366738002a95c85` |
| Max expected duration | < 45.4 seconds |
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issue