【报Bug】通过webview修改导航栏seachInput的属性，导致搜索框的提交事件失效

使用的关键代码如下

//按钮监听  
onNavigationBarButtonTap(res) {  
 let isSearch = titleNViewUtil.isSearch(this);  
 titleNViewUtil.showSearch(this, {placeholder: "输入关键词搜索"}, isSearch);  
 //点击取消  
  if (!isSearch) {  
            console.log("点击取消");  
  }  
},  
//搜索提交监听  
onNavigationBarSearchInputConfirmed(res) {  
  console.log("点击搜索--关键词为：",res.text);  
}

//原生标题栏工具类  
export const titleNViewUtil = {  
temp: {  
    titleNView: {}  
},  
showSearch(_this, searchInput, isSearch) {  
    //#ifndef APP-PLUS  
    if (true) {  
        return;  
    }  
    //#endif  
    let webview = _this.$mp.page.$getAppWebview();  
    let tn = webview.getStyle().titleNView;  
    if (!searchInput) {  
        searchInput = {}  
    }  
    let titleNView = webview.getTitleNView();  
    let titleTextId = 'titleText';  
    let titleText = plus.nativeObj.View.getViewById(titleTextId);  
    if (isSearch) {  
        if (titleText) {  
            titleText.hide();  
        }  
        this.temp.titleNView = JSON.parse(JSON.stringify(tn));  
        if (tn.searchInput) {  
            tn.searchInput.disabled = false;  
            tn.searchInput.autoFocus = true;  
            tn.searchInput.backgroundColor = "#fff";  
            tn.searchInput.placeholderColor = '#999';  
        } else {  
            tn.searchInput = Object.assign({  
                placeholder: "输入内容搜索",  
                borderRadius: "6px",  
                autoFocus: true,  
                backgroundColor: "#fff",  
                placeholderColor: '#999',  
                align: 'left',  
                disabled: false  
            }, searchInput);  
        }  
        tn.buttons[0].width = '50px';  
        tn.buttons[0].text = '取消';  
        tn.buttons[0].fontSize = '17px';  
    } else {  
        let temp = this.temp.titleNView;  
        if (titleText) {  
            titleText.show();  
        } else {  
            titleNView.drawText(temp.titleText, {}, {color: temp.titleColor, size: temp.titleSize}, titleTextId);  
        }  
        webview.setTitleNViewSearchInputText('');  
        tn.buttons[0].width = temp.buttons[0].width;  
        tn.buttons[0].text = temp.buttons[0].text;  
        tn.buttons[0].fontSize = temp.buttons[0].fontSize;  
        tn.searchInput.backgroundColor = 'rgba(0,0,0,0)';  
        tn.searchInput.disabled = true;  
        tn.searchInput.placeholderColor = 'rgba(0,0,0,0)';  
    }  

    webview.setStyle({  
        titleNView: tn  
    })  
},  
isSearch(_this) {  
    //#ifndef APP-PLUS  
    if (true) {  
        return false;  
    }  
    //#endif  
    let webview = _this.$mp.page.$getAppWebview();  
    let tn = webview.getStyle().titleNView;  
    return tn.buttons[0].text != '取消';  
}  
};