[Feature] Frontend to present backend raised exception

[rquidute]

Feature description

Backend is now checking if PICS are informed pior to a new test run execution: #446

Frontend should present in the UI, the message returned in POST test_run_executions/{id}/start when an exception is raised.
The backend returns error code 422 and message: No PICS were informed, when the user tries to start a new execution without informing PICS.

Currently the following message is being displayed:

Use Cases

Crete a new project and do NOT inform PICS
Create a new test run and try to start a new execution
Front should display the message returned by backend.

Test Cases

No response

Additional Information

No response