After T6819, I switched to using a 'Projects:' line in the arc commit messages to get projects to attach. I think it will be easier to train my users to switch to this manner if the message template had this line for them to fill in. So I was trying to fix this and ended up at [[/diffusion/P/browse/master/src/applications/differential/customfield/DifferentialProjectsField.php]].
It looks like `shouldAppearInCommitMessage()` is actually true here already, but I don't see it come through in the message template.
So my main questions are:
1. Is it intentional that I don't see 'Projects: ' in the message template?
2. If so, is there an easy way to enable it?