fix(Message#editable): fix permissions check in locked threads (#9319)

fix(Message#editable): fix permissions check if channel is thread & locked

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

packages/discord.js/src/structures/Message.js

@@ -608,7 +608,7 @@ class Message extends Base {
     if (this.channel?.isThread()) {
       if (this.channel.archived) return false;
       if (this.channel.locked) {
-        const permissions = this.permissionsFor(this.client.user);
+        const permissions = this.channel.permissionsFor(this.client.user);
         if (!permissions?.has(PermissionFlagsBits.ManageThreads, true)) return false;
       }
     }