DAP Executor ID and Executor URL terminology is confusing in the UI

Problem

See the discussion at #578824 (comment 2868551525)

We display "Executor ID" and a link in our UI for flow sessions. This new noun "Executor" is not a concept described anywhere and it causes confusion.

Under the hood it is a pipeline URL but the session actually just runs in a single job, requiring two clicks to get there. (one into the pipeline another one into the job)

Proposal

I propose we make 2 changes:

1. We change the link to point to the first job in the pipeline (called workload) rather than linking to the overall pipeline and use the ID from that
2. We change the heading to say "Job ID:"