PipelineRun - keep first (error) message instead of last one?

[alxsap]

I often saw PipelineRuns having having a message and shortMessage with useless subsequent errors like

example:
ERROR: error deleting namespace (demok8s-bjsb2 - status:cleaning): error
    deleting namespace ''steward-run-ripx3yrn80i04ulh'': Operation cannot be fulfilled
    on namespaces "steward-run-ripx3yrn80i04ulh": The system is ensuring all content
    is removed from this namespace.  Upon completion, this namespace will automatically
    be purged by the system.'

The history still contains the original error which caused failing the pipeline. But e.g. -owide shows the shortMessage.
We should consider using the first error message in message and shortMessage, or find a better way.