Fixes #140162

This PR is to add a scrollbar for MenuAnchor and DropdownMenu for all platforms when height is limited. Previously, a scrollbar only shows on desktop platforms. This PR also disabled scrollbar's overscroll for MenuAnchor and DropdownMenu.

<img src="https://github.com/flutter/flutter/assets/36861262/9ca3d4d0-415f-43bf-9d2b-df96a42db620" width="250"/><img src="https://github.com/flutter/flutter/assets/36861262/18da8d02-586b-4aa4-b647-927691542429" width="350"/>