Hitting a 400 table doesn't exist but completely breaks project.

[royendo]

Describe the bug
I seem to be having an issue with commercial weekly and its broken. I'd expect to see this error in the status page with a "X" instead of not being able to access anything in the UI.

It was resolved by refreshing all project in CLI but not sure how it got to this state. If i navigate to status with the few seconds that i have, its fine and I can see the table is being loaded still

To Reproduce
Steps to reproduce the behavior:

1. Go to https://ui.rilldata.com/rilldata/internal-commercial-insights
2. Page hits 400, cant do anything.
3. refresh the project from CLI fixed the issue

Expected behavior
If a source or model errors, see this in the status page.

Screenshots

[ericpgreen2]

This happens when you hover over the link-to-dashboard, and, in doing so, we call a function to preload some dashboard data. This eagerly-called function is throwing this error.

This blocking error page is a side effect of this issue, which we need to fix!