message: fix(types): `ThreadMetadata#create_timestamp` is optional and nullable & `locked` is not optional
diff: @@ -7,9 +7,9 @@ export interface ThreadMetadata {
  /** Timestamp when the thread's archive status was last changed, used for calculating recent activity */
  archiveTimestamp: string;
  /** When a thread is locked, only users with `MANAGE_THREADS` can unarchive it */
  - locked?: boolean;
  + locked: boolean;
  /** whether non-moderators can add other non-moderators to a thread; only available on private threads */
  invitable?: boolean;
  /** Timestamp when the thread was created; only populated for threads created after 2022-01-09 */
  - createTimestamp: string;
  + createTimestamp?: string | null;
  }
  