fix(ThreadChannel): invalid owner fetch option (#10292)

fix(ThreadChannel): invalid owner fetch options

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: ducktrshessami

packages/discord.js/src/structures/ThreadChannel.js

@@ -300,7 +300,7 @@ class ThreadChannel extends BaseChannel {
     }
 
     // TODO: Remove that catch in the next major version
-    const member = await this.members._fetchSingle({ ...options, user: this.ownerId }).catch(error => {
+    const member = await this.members._fetchSingle({ ...options, member: this.ownerId }).catch(error => {
       if (error instanceof DiscordAPIError && error.code === RESTJSONErrorCodes.UnknownMember) {
         return null;
       }