Cannot always delete span assertions

[kdhamric]

You cannot always delete an assertion

Test setup:
method: POST
url: http://demo-pokemon-api.demo.svc.cluster.local/pokemon/import flow (
request body: { "id": 52 })

Go to the 'Insert' Postgressq step and add an assertion based on the db.statement eq.
Save this.
Try to edit it and delete this assertion - it will not allow you to. Expected behavior would be that it would allow the deletion.

To look at a test that already has this assertion, go to: https://demo.tracetest.io/test/6ac1b25b-45fd-4241-9068-8adcb30a543d?resultId=9ef0f383-b7e0-403d-8000-cf90b4089521