fix(Message): update pinnable to check for migrated guilds

Author: sdanialraza

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

@@ -785,7 +785,14 @@ class Message extends Base {
       !this.system &&
         (!this.guild ||
           (channel?.viewable &&
-            channel?.permissionsFor(this.client.user)?.has(PermissionFlagsBits.ManageMessages, false))),
+            channel
+              ?.permissionsFor(this.client.user)
+              ?.has(
+                this.guild?.features.includes('PIN_PERMISSION_MIGRATION_COMPLETE')
+                  ? PermissionFlagsBits.PinMessages
+                  : PermissionFlagsBits.ManageMessages,
+                false,
+              ))),
     );
   }