Test: Smooth Scrolling

[alexdima]

Test plan item for #4606 (PR #25286)

Complexity: 3

• windows @roblourens
• linux @Tyriar
• OSX @jrieken

Configure editor.smoothScrolling: true. Please check that the editor animates to a certain scroll location in various cases (e.g. page up, page down, ctrl+home, next diff, etc.) and please help in identifying the cases where it should not animate. e.g. code lens getting computed and their space getting reserved.

The smooth scrolling should also kick in when using a physical mouse with a wheel, but not when using a touchpad. This uses a classifier which might be incorrect. If you have a device where we extra animate on top of an inertia-ready device or where we don't animate on a mouse wheel, please let me know so I can ask you for some additional information.