Remove queue cancel controls (#6723)

## Summary
- remove the interrupt/clear controls from the run button cluster
- drop the queue pending count dependencies that only fed those controls

This is at the request of product design, because this functionality is
being relocated to the queue progress overlay in bl-execution

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6723-Remove-queue-cancel-controls-2ae6d73d365081ddaa63ea9e3447ad7f)
by [Unito](https://www.unito.io)

---------

Co-authored-by: pythongosssss <[email protected]>
Co-authored-by: GitHub Action <[email protected]>
Co-authored-by: github-actions <[email protected]>
Co-authored-by: Jin Yi <[email protected]>
Co-authored-by: Claude <[email protected]>
Co-authored-by: Alexander Brown <[email protected]>
Co-authored-by: Johnpaul Chiwetelu <[email protected]>
Co-authored-by: Christian Byrne <[email protected]>
Co-authored-by: Comfy Org PR Bot <[email protected]>
Co-authored-by: christian-byrne <[email protected]>

Author: 10 people