修改了信息显示不完整问题，将其修改成文本过长时显示省略号，并有浮框提示完整信息

Log: 系统语言为英文的环境先，按电源按钮时设置项的文字显示被遮盖、缺损
Bug: https://pms.uniontech.com/zentao/bug-view-49543.html
Change-Id: I2344d32c3f220e37ad79b0699ed4cd0d774be7c1
Reviewed-on: http://gerrit.uniontech.com/c/dde-control-center/+/6344
Reviewed-by: fanpengcheng <fanpengcheng@uniontech.com>
Reviewed-by: <mailman@uniontech.com>
Tested-by: <mailman@uniontech.com>