Always fetch pipeline test report

What does this MR do?

Related to #329206 (closed)

Problem: The Unit Test Report is not showing the results in Pipeline -> Tests tab when the pipeline is blocked or still running.

Solution: Revert a recent change to prematurely check if a pipeline has a test report artifact before fetching the test report summary.

Does this MR meet the acceptance criteria?

Conformity

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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
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