feat(GlListbox,GlDisclosure): Update dropdown styles
What does this MR do?
Updates new dropdown styles according to the new designs - this would be Step 1 for #2125 (closed)
Overflow scrim (step 2) and arrow/tick (step 3) are out of the scope of this MR.
I've separated old and new dropdown styles so that dropdowns implemented with GlDropdown
will look as before whereas GlCollapsibleListbox
and GlDisclosureDropdown
will be redesigned.
All new dropdown CSS classes are starting with gl-new-dropdown
prefix but if you can think of a better naming - I'm open to suggestions.
References #2125 (closed)
Edited by Olena Horal-Koretska