fix(dashboard): workflow editor name change updates the workflow slug in the url

[LetItRock]

What changed? Why was the change needed?

This PR fixes the case when the workflow name is updated in the Workflow Editor we generate a new slug for the workflow on the BE, which should also update the slug used in the URL to make it a source of truth.

All the useFetchWorkflow, useFetchStep, useUpdateWorkflow hook should use the workflow id from the slug as the key for the react-query state.

Screenshots

https://github.com/user-attachments/assets/c696d5d6-9c05-4547-8c82-d6b727869ca5

https://github.com/user-attachments/assets/ff80cb4a-fbd0-48b1-8f9d-37d0cf3492ca

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