Feature Request: Usability with workflow_run

[ohcnkk]

When the workflow is triggered with workflow_run from non-default branch, requesting the actions to have the capability to pickup the information from workflow_run payload.

https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#webhook-payload-example-50

workflow_run always uses default branch.
https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#workflow_run