fix(product): 修复待审核产品统计查询条件

- 移除不必要的 whereNull('spu_id') 条件以正确统计所有待审核产品

app/common/repositories/store/product/ProductRepository.php

@@ -677,7 +677,7 @@ class ProductRepository extends BaseRepository
         $result[] = [
             'type'  => 6,
             'name'  => '待审核' . $name,
-            'count' => $this->dao->search($merId, $this->switchType(6, $merId, $productType, $is_gift_bag))->whereNull('spu_id')->count()
+            'count' => $this->dao->search($merId, $this->switchType(6, $merId, $productType, $is_gift_bag))->count()
         ];
         $result[] = [
             'type'  => 7,