Make activating a chapter selector makes window scroll to top like clicking on timestamp links

[PikachuEXE]

Pull Request Type

• [ ] Bugfix
• [x] Feature Implementation
• [ ] Documentation
• [ ] Other

Related issue

Idea from https://github.com/FreeTubeApp/FreeTube/pull/4687#pullrequestreview-1900332790

Description

As title

Screenshots

Test yourself I am lazy to take video :)

Testing

• Find a video with chapter (plenty from LTT)
• Click on random chapter and ensure window jumps back to top

Desktop

• OS:
• OS Version:
• FreeTube version:

Additional context