[AAP-25659] Show error if resources are missing in Schedule wizard

[jerabekjiri]

[marshmalien]

We don't need to show an error when a workflow job template is missing an inventory. Only when the launch config inventory_needed_to_start is true AND the schedule is missing an inventory.

https://github.com/ansible/awx/blob/devel/awx/ui/src/components/Schedule/shared/ScheduleForm.js#L246-L260

  let missingInventory = false;
  if (
    launchConfig?.inventory_needed_to_start &&
    !schedule?.summary_fields?.inventory?.id
  ) {
    missingInventory = true;
  }
  return missingInventory;
}, [launchConfig, schedule]);