message: fix: get initializedRelationships from the correct place
diff: @@ -147,7 +147,7 @@ export default class OsfSerializer extends JSONAPISerializer {
  }
  }
  // HACK: There's no public-API way to tell whether a relationship has been changed.
  - const relationships = (snapshot as any)._internalModel._recordData.__relationships.initializedRelationships;
  + const relationships = (snapshot as any)._internalModel.__recordData._relationships.initializedRelationships;
  if (serialized.data.relationships) {
  for (const key of Object.keys(serialized.data.relationships)) {
  const rel = relationships[camelize(key)];
  