fix: 修改上传购买人照片的模型和路径

src/pages/form/formStep4.vue

@@ -156,8 +156,8 @@
             v-model:fileIds="formData.buyerPhotoIds"
             :limit="1"
             :required="false"
-            attmodel="orders_identity"
-            attpath="/orders_identity/"
+            attmodel="orders_buyer"
+            attpath="/orders_buyer/"
             modelStats="buyerPhotoIds"
             message="请上传购买人照片"
           />