feat: add early validation for perfume and quality with toast notification.

app/Traits/Order/WithAddItem.php

@@ -111,6 +111,12 @@ protected function handleRefillPerfume(): void
         $perfume = Perfume::find($this->form->perfume_id);
         $quality = Formula::find($this->form->quality_id);
 
+        if (! $perfume || ! $quality) {
+            $this->toast('Parfum, ukuran, atau kualitas tidak valid.', 'Gagal', 'danger');
+
+            return;
+        }
+
         $quantity = $quality->volume;
 
         if (! $perfume || ! $quality || $quantity <= 0) {