message: fix(types::QueryHelperThis): fix missing QueryHelpers in DocumentType
  this should fix that queryhelper's return types sometimes are incompatible
diff: @@ -502,11 +502,11 @@ export type AsQueryMethod<T extends (...args: any) => any> = (...args: Parameter
  * return this.findOne({ _id: id });
  * }
  */
  -export type QueryHelperThis<T extends AnyParamConstructor<any>, QueryHelpers, S = DocumentType<T>> = mongoose.QueryWithHelpers<
  - S | null,
  - S,
  - QueryHelpers
  ->;
  +export type QueryHelperThis<
  + T extends AnyParamConstructor<any>,
  + QueryHelpers,
  + S = DocumentType<T, QueryHelpers>
  +> = mongoose.QueryWithHelpers<S | null, S, QueryHelpers>;
  /**
  * Used for the Reflection of Query Methods
  