refactor(oilPriceManage): 修改油品价格管理表单校验规则

- 将 fuelModel 字段的必填规则从 false 修改为 true，确保油型号为必填项
- 将 price 字段的必填规则从 true 修改为 false，允许价格字段为空

src/views/workStation/oilPriceManage.vue

@@ -160,8 +160,8 @@ const rules = reactive({
   fuelShipLatitude: [
     { required: true, message: "请输入纬度", trigger: "blur" },
   ],
-  fuelModel: [{ required: false, message: "请输入油型号", trigger: "blur" }],
-  price: [{ required: true, message: "请输入价格", trigger: "blur" }],
+  fuelModel: [{ required: true, message: "请输入油型号", trigger: "blur" }],
+  price: [{ required: false, message: "请输入价格", trigger: "blur" }],
   priceDate: [{ required: true, message: "请选择发布日期", trigger: "change" }],
 });