Link to issue references in commit messages for EmailOnPush messages
### Problem to solve
When receiving EmailOnPush emails that contain a commit message that references an issue, this does not create a link to the related issue.
### Further details
(Include use cases, benefits, and/or goals)
### Proposal
Create a link for issue references and add it to the EmailOnPush email message
### What does success look like, and how can we measure that?
(If no way to measure success, link to an issue that will implement a way to measure this)
### Links / references
issue