Confirm timeout still works for Task Time Out

[tlawrie]

As part of the Tekton upgrades in 0.28.x there were improvements made to the activeDeadlineSeconds support. Essentially this sets the kube timeout to be 1.5 times the Task timeout so that Tekton ends the tasks before Kube ends the pod.

We need to double check the implementation of Task Run timeout and ensure/validate it still works as expected.