getLazySingletonUnsafe<T extends Object>  method 
Retrieves the lazily loaded singleton dependency unsafely, returning the instance directly or throwing an error if not found or not a singleton.
Implementation
@pragma('vm:prefer-inline')
FutureOr<T> getLazySingletonUnsafe<T extends Object>({
  Entity groupEntity = const DefaultEntity(),
  bool traverse = true,
}) {
  UNSAFE:
  return getLazySingleton<T>(
    groupEntity: groupEntity,
    traverse: traverse,
  ).map((e) => e.unwrap()).unwrap();
}