Co-authored-by: @sbatten

- do not remove if not registered
- pull replaces local completely

* Added 2 settings for the scrollbar height of breadcrumbs and tabs

* Added 2 settings for the scrollbar height of breadcrumbs and tabs

* Moved from pixel based scrollbar settings to a categorical sizing setting, default and large

* some cleanup and 💄

* Use updateOptions to update the horizontal scrollbar size
Co-authored-by: NBenjamin Pasero <benjpas@microsoft.com>
Co-authored-by: NAlex Dima <alexdima@microsoft.com>