1.需要删除填充到扩展平铺部件的列表项，请找到实际结果的图像。预期结果应删除顶部和底部空间
下面是代码，有谁可以帮助我：

Theme(
      data: theme,
      child: ListTileTheme(
        contentPadding: EdgeInsets.all(0),
        dense: true,
        child: ExpansionTile(
          title: Row(
            mainAxisAlignment: MainAxisAlignment.start,
            children: [
              GFCheckbox(
                inactiveBgColor: kColorPrimaryDark,
                inactiveBorderColor: Colors.white,
                customBgColor: kColorPrimaryDark,
                size: 15,
                activeIcon: const Icon(
                  Icons.check,
                  size: 15,
                  color: Colors.white,
                ),
                activeBgColor: kColorPrimaryDark,
                onChanged: (value) {
                  setState(() {
                    isChecked = value;
                  });
                },
                value: isChecked,
                inactiveIcon: null,
              ),
              SizedBox(
                width: 5,
              ),
              textWidget(color: Colors.white, size: 12, text: root.title),
            ],
          ),
          key: PageStorageKey<DataList>(root),
          children: root.children.map(_buildTiles).toList(),
        ),
      ),
    );