Make workflow step name editable (#8677)

- Use TextInput in header title
- add onTitleChange prop
- rename field name instead of label

To fix :
- padding right on title comes from current TextInput component. It
needs to be refactored


https://github.com/user-attachments/assets/535cd6d3-866b-4a61-9c5d-cdbe7710396a

packages/twenty-front/src/modules/workflow/components/WorkflowDiagramStepNodeBase.tsx

@@ -100,8 +100,8 @@ export const WorkflowDiagramStepNodeBase = ({
 
   return (
     <WorkflowDiagramBaseStepNode
+      name={data.name}
       nodeType={data.nodeType}
-      label={data.label}
       Icon={renderStepIcon()}
       RightFloatingElement={RightFloatingElement}
     />