E2E: log import failures in case of failed spec

What does this MR do and why?

Describe in detail what your merge request does and why.

In order to debug #345639 (closed) and #347020 (closed) we need as much error messages as possible. Move logging import failures to after block in case of test case failed and to improve test stability, remove explicit validation of present errors since the check can introduce failures that are note necessarily related to particular spec.

Explore adding back checking all of the errors once existing issues and flakiness is resolved

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