8563 workflow workflow node does not open on step click (#8582)

- fix multiple node selection
- fix console error
- fix close right drawer no unselect nodes
- fix edges not selectable
- fix sometime node not selected when clicking

## After


https://github.com/user-attachments/assets/ceec847f-5b7d-4452-9685-81a845bbf21e

packages/twenty-front/src/modules/workflow/utils/generateWorkflowDiagram.ts

@@ -70,6 +70,7 @@ export const generateWorkflowDiagram = ({
         type: MarkerType.ArrowClosed,
       },
       deletable: false,
+      selectable: false,
     });
 
     return nodeId;