fix(MessageReaction): Address undefined burst properties (#10597)

* fix(MessageReaction): `undefined` burst properties

* refactor: simpler burst colour check

Co-authored-by: Almeida <github@almeidx.dev>

---------

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

packages/discord.js/src/structures/MessageReaction.js

@@ -36,7 +36,7 @@ class MessageReaction {
      * Whether the client has super-reacted using this emoji
      * @type {boolean}
      */
-    this.meBurst = data.me_burst;
+    this.meBurst = Boolean(data.me_burst);
 
     /**
      * A manager of the users that have given this reaction
@@ -52,7 +52,7 @@ class MessageReaction {
   }
 
   _patch(data) {
-    if ('burst_colors' in data) {
+    if (data.burst_colors) {
       /**
        * Hexadecimal colors used for this super reaction
        * @type {?string[]}