Fix horizontal revealing of a range (in the smooth scrolling case where the line containing the range might come in the viewport at a later time)

* use `dom.scheduleAtNextAnimationFrame`

* have explicit methods for changing the scroll position (delayed/smooth vs now/direct) that bubble up to the editor internals.
* have all other clients of ScrollableElement not use smooth scrolling

Do not use translate3d in scrollbars, use will-change for scrollbar sliders instead (Microsoft/monaco-editor#426)

* Fix horizontal scrolling when shift is held

Fixes #24710

* Improve comment

 * Apply smooth scrolling in every scrollable element when mouse wheel scroll
   occurs

 * Apply smooth scrolling in editor view when large jumps occur
   (e.g. when the cursor is moved by pressing PageUp or PageDown)

fixes #21001

Fixes Microsoft/monaco-editor#69: Introduce and adopt `alwaysConsumeMouseWheel` ScrollableElement option

related #6978