Initial fix to "all threads must be resolved"
Updates the messaging for one of the reasons why a merge might be blocked. Uses the new [current status]
+ [next steps]
pattern.
- Old:
Before this can be merged, one or more threads must be resolved.
- New:
Merge blocked: all threads must be resolved.
Related issues
Related to #323061 (closed) where we're constructing multiple new messages. Also related to #289827 (closed).
Edited by Pedro Moreira da Silva