Clean workflow query invalid input errors from sentry (#18804)

As title

packages/twenty-server/src/modules/workflow/workflow-executor/workflow-actions/iterator/iterator.workflow-action.ts

@@ -55,7 +55,7 @@ export class IteratorWorkflowAction implements WorkflowActionInterface {
     if (!Array.isArray(parsedItems)) {
       throw new WorkflowStepExecutorException(
         'Iterator input items must be an array',
-        WorkflowStepExecutorExceptionCode.INTERNAL_ERROR,
+        WorkflowStepExecutorExceptionCode.INVALID_STEP_INPUT,
       );
     }