Preserve selected class when refreshing memory data

On the Profile Memory tab, when you click Refresh, the selected class is not preserved. We should preserve this data (if the class is still available after refreshing the data) and scroll the list to the selection.

从 Profile Memory 标签页开始，跟踪内存数据列表的 Refresh 交互。验证选定的类在 Refresh 后仍然可用时是否保持选中，并验证列表是否滚动到该选项；否则，不应恢复任何选项。

由索引模型根据 Issue 内容生成。