Add a button to cancel a deployment when using canaries

[israellot]

It would be useful to have a button to cancel a deployment and remove canaries besides the button that promotes the canaries.
This would make the UI a bit more complete in terms of operation of a deployment that uses canaries.

[DingoEatingFuzz]

Hi @israellot, will #9831 fulfill what you had in mind?

[israellot]

Yes @DingoEatingFuzz , I believe that would cover it well. Thanks for the ping on this issue

[github-actions]

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