Show issue is blocked in sticky header

Problem to solve

When commenting on an issue, developers should be aware that it's blocked by other issues. They should be aware that the issue cannot be actively worked on until blocking issues are resolved.

Intended users

User experience goal

Proposal

In the sticky header, highlight that the issue is blocked (by other issues).

Further details

Permissions and Security

Documentation

Availability & Testing

What does success look like, and how can we measure that?

What is the type of buyer?

Is this a cross-stage feature?

Links / references

/cc @hollyreynolds @gonzoyumo