Delete workflow step (#7373)

- Allows the deletion of triggers and steps in workflows. If the
workflow can not be edited right now, we create a new draft version.
- The workflow right drawer can now render nothing. It's necessary to
behave that way because a deleted step will still be displayed for a
short amount of time in the drawer. The drawer will be filled with blank
content when it disappears.


https://github.com/user-attachments/assets/abd5184e-d3db-4fe7-8870-ccc78ff23d41

Closes #7057

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

@@ -1,41 +1,21 @@
-import { TRIGGER_STEP_ID } from '@/workflow/constants/TriggerStepId';
 import { WorkflowStep } from '@/workflow/types/Workflow';
+import { findStepPosition } from '@/workflow/utils/findStepPosition';
 import { isDefined } from 'twenty-ui';
 
 /**
  * This function returns the reference of the array where the step should be positioned
  * and at which index.
  */
-export const findStepPositionOrThrow = ({
-  steps,
-  stepId,
-}: {
+export const findStepPositionOrThrow = (props: {
   steps: Array<WorkflowStep>;
   stepId: string | undefined;
 }): { steps: Array<WorkflowStep>; index: number } => {
-  if (!isDefined(stepId) || stepId === TRIGGER_STEP_ID) {
-    return {
-      steps,
-      index: 0,
-    };
+  const result = findStepPosition(props);
+  if (!isDefined(result)) {
+    throw new Error(
+      `Couldn't locate the step. Unreachable step id: ${props.stepId}.`,
+    );
   }
 
-  for (const [index, step] of steps.entries()) {
-    if (step.id === stepId) {
-      return {
-        steps,
-        index,
-      };
-    }
-
-    // TODO: When condition will have been implemented, put recursivity here.
-    // if (step.type === "CONDITION") {
-    //     return findNodePosition({
-    //         workflowSteps: step.conditions,
-    //         stepId,
-    //     })
-    // }
-  }
-
-  throw new Error(`Couldn't locate the step. Unreachable step id: ${stepId}.`);
+  return result;
 };