Want to add a back-to-top feature

[QShengW]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Scrollbars cannot return to their original state when switching content

Describe the solution you'd like A clear and concise description of what you want to happen. Let the scroll area go back to the top when clicking on the toggle Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Add any other context or screenshots about the feature request here.

[buixuanhai]

I think back to top is a feature that is not related to the lib. You can implement your own button.