feat: 1.餐位费允许增减数量 2.选择人数根据店铺配置决定是否操作

src/main/java/com/chaozhanggui/system/cashierservice/controller/OrderController.java

@@ -213,6 +213,9 @@ public class OrderController {
      */
     @PutMapping("/choseCount")
     public Result choseCount(@Validated @RequestBody ChoseCountDTO choseCountDTO) {
+        if (choseCountDTO.getNum() == null) {
+            return Result.success(CodeEnum.SUCCESS);
+        }
         return Result.success(CodeEnum.SUCCESS, orderService.choseCount(choseCountDTO));
     }