refactor(GuildMember): make _roles property non-enumerable (#9387)

* refactor(GuildMember): make _roles a getter and roles a normal prop

* fix: revert changes

* fix: requested changes

* fix: requested changes

---------

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

Author: Idris1401

packages/discord.js/src/structures/GuildMember.js

@@ -56,10 +56,12 @@ class GuildMember extends Base {
 
     /**
      * The role ids of the member
+     * @name GuildMember#_roles
      * @type {Snowflake[]}
      * @private
      */
-    this._roles = [];
+    Object.defineProperty(this, '_roles', { value: [], writable: true });
+
     if (data) this._patch(data);
   }