Show more specific error message when user attempts to create release with new protected tag
Background
This is a follow up to #327505 (closed). See the discussion in this comment.
Current state
Currently, if a user attempts to create a new release from the New Release page with a new tag that matches a protected tag pattern, the page shows a generic "Something went wrong" error.
This happens because the user doesn't have permission to create a protected tag, but it's not obvious to the user why this is.
Proposal
In this case, show a more specific error message:
You don't have permission to create a tag named
<tag name>because it would be a protected tag.
Other related issues
Edited by Nathan Friend