feat: Add If/Else node (#16833)

Closes [#1265](https://github.com/twentyhq/core-team-issues/issues/1265)

packages/twenty-front/src/modules/command-menu/pages/workflow/action/components/CommandMenuWorkflowSelectAction.tsx

@@ -17,6 +17,9 @@ export const CommandMenuWorkflowSelectAction = ({
   onActionSelected: (actionType: WorkflowActionType) => void;
 }) => {
   const isAiEnabled = useIsFeatureEnabled(FeatureFlagKey.IS_AI_ENABLED);
+  const isIfElseEnabled = useIsFeatureEnabled(
+    FeatureFlagKey.IS_IF_ELSE_ENABLED,
+  );
 
   const { t } = useLingui();
 
@@ -46,7 +49,9 @@ export const CommandMenuWorkflowSelectAction = ({
         {t`Flow`}
       </RightDrawerWorkflowSelectStepTitle>
       <WorkflowActionMenuItems
-        actions={FLOW_ACTIONS}
+        actions={FLOW_ACTIONS.filter(
+          (action) => action.type !== 'IF_ELSE' || isIfElseEnabled,
+        )}
         onClick={onActionSelected}
       />