SQL Editor sometimes does not show the request errors

[ericpgreen2]

To reproduce:

1. Create this model:

   SELECT Cast('Hello, World!' as UUID) AS Greeting
   

2. The results pane shows an infinite spinner, yet the network request returned a 400 error
3. Interestingly, by further modifying the SQL query, e.g. by adding a -- to the end of the SQL statement, you can see the 400 error show up in the results pane