fix: 略微调整代码顺序，解决某些时候只读组件渲染错误的问题

src/components/Form/src/components/Readonly.vue

@@ -11,8 +11,8 @@
         model: Object
     });
 
-    const fieldValue = ref(genFieldValue(props.value));
     const textComponents = ['Input', 'AutoCodeRule', 'DatePicker', 'TimePicker', 'Info', 'Text', 'InputTextArea', 'InputNumber'];
+    const fieldValue = ref(genFieldValue(props.value));
 
     function parseRangeVal(val, component) {
         if (component !== 'RangePicker' || !val) {