Update next step ids on step update (#11605)

When inserting a new step between step 1 et step 2, then step 1 should
have the new step as next step id, add stop having step 2.

When deleting a step, we link the parent and next steps together. It may
change in the future

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

@@ -12,8 +12,8 @@ import {
 import { getWorkflowDiagramTriggerNode } from '@/workflow/workflow-diagram/utils/getWorkflowDiagramTriggerNode';
 
 import { TRIGGER_STEP_ID } from '@/workflow/workflow-trigger/constants/TriggerStepId';
-import { v4 } from 'uuid';
 import { isDefined } from 'twenty-shared/utils';
+import { v4 } from 'uuid';
 
 export const generateWorkflowDiagram = ({
   trigger,

packages/twenty-front/src/modules/workflow/workflow-steps/hooks/useCreateStep.ts

@@ -38,6 +38,8 @@ export const useCreateStep = ({
       await createWorkflowVersionStep({
         workflowVersionId,
         stepType: newStepType,
+        parentStepId: workflowCreateStepFromParentStepId,
+        nextStepId: undefined,
       })
     )?.data?.createWorkflowVersionStep;