Feature/jenkins 36974 35796 stop build

[cliffmeyers]

Description

• This PR includes changes from Task/jenkins 36687 run pipeline refactor #440 so ideally we'll merge than first, then merge master again to clean up the diff.
• See JENKINS-35796.
• See JENKINS-36974.
• This PR incorporates the following changes
  • Add a "Stop" button to the Activity tab, to the right of any build that is running or queued,
  • Add a "Stop" button to Run Details for any build that is running (not sure if handling queued is in scope or feasible; conversations are in-progress)
  • Replace the "Run" button on the Activity tab for non multi-branch projects with the new implementation
  • Replace the "Run" buttons on the Branches and PR tabs with the new implementation (this wasn't called out in any ticket but seems sensible to do)
• TODO item:
  • Find a better way to prevent duplicate toasts being fired when a job is started or stopped. This is handled now in ToastService - and while it works - it's perhaps concerning that multiple instances of Run button bound to the same pipeline are firing dup toasts, and that Favorites from the dashboard will also attempt to propagate a toast.

Submitter checklist

• Link to JIRA ticket in description, if appropriate.
• Change is code complete and matches issue description
• Appropriate unit or acceptance tests or explanation to why this change has no tests
• Reviewer's manual test instructions provided in PR description. See Reviewer's first task below.
• Ran Acceptance Test Harness against PR changes.

Reviewer checklist

• Run the changes and verified the change matches the issue description
• Reviewed the code
• Verified that the appropriate tests have been written or valid explanation given

@jenkinsci/code-reviewers @reviewbybees

[michaelneale]

needs updating to master again...

[cliffmeyers]

Gonna wait for JWT to land before I merge again.

[michaelneale]

ace

[cliffmeyers]

Also closing this PR; superseded by #448