Add warning icon beside in progress if stuck

What does this MR do?

Solves confusing UX if a pipeline is stuck. In the duration column on the pipelines table we display the text In progress if a pipeline is in progress. A pipeline can be stuck and still display this wording. We are okay with the wording but the timer icon makes it a bit confusing. So we are moving to a warning icon only if the pipeline is stuck.

Screenshots (strongly suggested)

Stuck pipeline

Running pipeline (unchanged)

Does this MR meet the acceptance criteria?

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