chore: Miscellaneous fixes

#9271 djs

> Backports the following pull requests to version 13:
>
> * docs: describe private properties #8879
> * fix(snowflake): snowflakes length #9144
> * fix(Message): `bulkDeletable` permissions should be retrieved later for DMs #9146
> * fix(Message#editable): update editable check in threads locked #9216
> * fix: add support for new guild feature `GUILD_WEB_PAGE_VANITY_URL` #9219
> * fix(AutocompleteInteraction): Send `name_localizations` correctly #9238
> * fix(ThreadManager): Respect `cache` and `force` in fetching #9239
> * docs(FetchArchivedThreadOptions): `before` respects `archive_timestamp`, not creation timestamp #9240
> * refactor(FetchThreadsOptions): Remove `active` #9241
> * docs: differ `User#send` #9251
> * docs: add more examples #9252
> * fix(ClientUser): No mutation on edit #9259
> * fix: resolving string bitfield #9262
> * refactor: call `GuildBanManager#create()` directly #9263
> * docs(Role): Fix example for `comparePositionTo()` #9270
> * docs: fix compare position example #9272
> * fix: Keep symbols in actions manager #9293

src/structures/User.js

@@ -645,12 +645,22 @@ class User extends Base {
     );
     return data;
   }
-
-  // These are here only for documentation purposes - they are implemented by TextBasedChannel
-  /* eslint-disable no-empty-function */
-  send() {}
 }
 
+/**
+ * Sends a message to this user.
+ * @method send
+ * @memberof User
+ * @instance
+ * @param {string|MessagePayload|MessageOptions} options The options to provide
+ * @returns {Promise<Message>}
+ * @example
+ * // Send a direct message
+ * user.send('Hello!')
+ *   .then(message => console.log(`Sent message: ${message.content} to ${user.tag}`))
+ *   .catch(console.error);
+ */
+
 TextBasedChannel.applyToClass(User);
 
 module.exports = User;