feat: throw custom error for uncached Guild#me (#3271)

* handle cases where Guild#me is uncached

* fix id prop

* remove unnecessary checks

* space's requested changes

src/structures/Invite.js

@@ -100,6 +100,7 @@ class Invite extends Base {
   get deletable() {
     const guild = this.guild;
     if (!guild || !this.client.guilds.has(guild.id)) return false;
+    if (!guild.me) throw new Error('GUILD_UNCACHED_ME');
     return this.channel.permissionsFor(this.client.user).has(Permissions.FLAGS.MANAGE_CHANNELS, false) ||
       guild.me.permissions.has(Permissions.FLAGS.MANAGE_GUILD);
   }