Bugfixes for dagits checking cookies on each request
Summary:
results of a debugging session with dish:
- better error visualzation when search bootstrap query fails (at least if you're looking at the response in devtools)
- fix bad typehint that that query was hitting
Test Plan: load dagit with cookie validation enabled
Reviewers: dish
Reviewed By: dish
Differential Revision: https://dagster.phacility.com/D8467