[dropdown] component audit bugs

[laurenmrice]

Assorted bugs that were found from the component audit for dropdown, combobox and mutli-select.

Dropdown

• Light prop: hover-light-ui color token needs to be used for the hover states.
• Warning state: warning icon needs a black inner fill for all themes.
• Invalid state: alert icon needs a black inner fill for dark themes.
• Inline variant: is not available to interact with in the playground story.

Combobox

• Light prop: hover-light-ui color token needs to be used for the hover states of the options in the menu.
• Warning state: there is currently no warning state for combobox, but it should be added.
• Invalid state: alert icon needs a black inner fill for dark themes.
• The top input field should not have a hover color change, only a cursor change to type.
• The close icon should be icon-01.

Multi-select

• Light prop: hover-light-ui color token needs to be used for the hover states.
• Warning state: warning icon needs a black inner fill for all themes.
• Invalid state: alert icon needs a black inner fill for dark themes.
• The entire tag right now is clickable which clear the selection. Only the close icon in the tag should clear the items selected.
• Tag hover color for the close icon needs to be inverse-hover-ui color token.
• Tag focus border needs to be around the close icon, not the entire tag. The focus color should be inverse-focus-ui color token.

[tw15egan]

Seems like the outstanding issues are resolved with #8092