improve dashboard UX when agent cannot connect

[cdr-robot]

Original Issue

From coder/coder#17569

The dashboard should better display troubleshooting information when an agent is in an unhealthy state, instead of requiring users to hover to see a tooltip.

Assignment

@coder

[github-actions]

❌ Failed to start the workspace. Please check the action logs for details.

[bpmct]

@coder

[github-actions]

✅ Coder workspace started! You can view the action logs here.

Workspace is available at: https://demo.coder.com/ben/issue-22