Only retry deploy tests for canary (#81207)
This avoids retrying/alerting if triggering the deploy tests with a
custom next tarball. The `run_name` is available as `display_title` [per
docs
here](https://docs.github.com/en/webhooks/webhook-events-and-payloads#workflow_run:~:text=The%20event%2Dspecific%20title%20associated%20with%20the%20run%20or%20the%20run%2Dname%20if%20set%2C%20or%20the%20value%20of%20run%2Dname%20if%20it%20is%20set%20in%20the%20workflow)
x-ref: [slack
thread](https://vercel.slack.com/archives/C04KC8A53T7/p1751485507582049)
