`Workflow.run()` will never return if a `Task` raises an uncaught exception

[vachillo]

• [x] I have read and agree to the contributing guidelines.

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 0.5.1]

Additional context Add any other context about the problem here.

[collindutter]

@vachillo can you provide a reproducible example?

[collindutter]

@vachillo bump

[vachillo]

transient and hard to reproduce