KERNEL-13928 refactor: 修改解构赋值错误的地方

src/base/single/0.single.js

@@ -68,8 +68,8 @@ export default class Single extends Widget {
     }
 
     _init() {
-        let { value } = this.options;
+        const { value } = this.options;
-        value = BI.isFunction(value) ? this.__watch(value, (context, newValue) => {
+        this.options.value = BI.isFunction(value) ? this.__watch(value, (context, newValue) => {
             this.setValue(newValue);
         }) : value;
         super._init(arguments);