fix(ChannelManager): Avoid crash in remove method with uncached chann…

…el (#4937)

* fix(ChannelManager): Avoid crash in remove method with uncached channel

* Use optional chaining

Co-authored-by: Ishmaam Khan <ishmaamk@gmail.com>

Co-authored-by: Ishmaam Khan <ishmaamk@gmail.com>

src/managers/ChannelManager.js

@@ -41,7 +41,7 @@ class ChannelManager extends BaseManager {
 
   remove(id) {
     const channel = this.cache.get(id);
-    if (channel.guild) channel.guild.channels.cache.delete(id);
+    channel?.guild?.channels.cache.delete(id);
     this.cache.delete(id);
   }