Follow up to patternfly/patternfly-design-kit#901
implement updated MessageBar pattern per the Genie user input concepts: https://www.figma.com/design/lJ5s1z11E4Q2Bp6kD3TE0W/Red-Hat-Project-Genie?node-id=353-5202&p=f&m=dev
- plus sign button/toggle to the left of the input which opens a menu
- selected 'mode' appears in a dismissible label below the input - inline with the send and microphone buttons. input moves up and takes up 100% width of message bar