fix: phpstan error

src/Listeners/ReplyPostValidate.php

@@ -36,7 +36,7 @@ public function handle(Saving $event)
             // If it's a new discussion, the reCAPTCHA is already validated in discussion saving event
             // When this code runs, the discussion already exists, and the number has not been assigned to the post yet
             // So we look in the discussion number index, just like the reply permission check does in PostReplyHandler
-            if ($event->post->number == 1 || $event->post->discussion->first_post_id === null) {
+            if ($event->post->number === 1 || $event->post->discussion->first_post_id === null) {
                 return;
             }