Bug #20000: Cancel button missing in "Queued" state - Arvados

I tried it on tordo and I'm seeing some button flickering when cancelling a running process and state changes.
- For example, the RUN button and the "Running" label both appears at the same time for a moment.
- I think these behaviors will be confusing for users.
As you can see in the attached ideo, the cancelled process doesn't get the RUN button at its final state.
Can we style the "Cancel" button the same way as the "Run" button?

Actions

#13

Reduce flickering by reloading container when container request is updated and by hiding the run button in cases where the container is transitioning between states
Change cancel button to outlined button

Actions

#14