Improve FE integration spec error logging
What does this MR do?
This MR improved error logging in our FE integration spec environment.
Screenshots (strongly suggested)
These screenshots are taken with the changes that caused this CI job failure https://gitlab.com/gitlab-org/gitlab/-/jobs/1369017099.
Before (testing-library error) |
After (testing-library error) |
After (mock-server error) |
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