Redesign of top control selectors (#24408)

* Selectors - add new design

* Improve dark mode

* Remove extra color in the palette

* Valeriia's feedback on top_controls spacing

* Update WidgetizedDashboard top control selector screenshot styles

* Uniformize styles between search and selectors

* Fix zen mode top control

* Fix selector height

* Update UI screenshots

* Fix Quick access border and height

* Redesign of top control selectors - feedbacks (#24426)

* Better WidgetizedDashboard wrapping

* Improve period selector - arrows focus style

* Remove top controls from overlay view

* Fix period selector padding

* Improve period selector styles without :has() selector

* Update UI screenshots

Author: tzi