Feat/BOOK-293 button adjustments

* feat(BOOK-293): Adjusted padding of the buttons to match Figma design
* feat(BOOK-293): Updated variants for IconButton
* feat(BOOK-113): Updated focus indicators on buttons and added default focus ring color
* feat(BOOK-293): Replaced buttons inside booking widget

Approved-by: Christel Westerberg

packages/booking-flow/lib/components/SelectRate/RoomsContainer/RateSummary/MobileSummary/Content/index.tsx

@@ -89,8 +89,8 @@ export default function SummaryContent({
           <IconButton
             className={styles.closeButton}
             onPress={toggleSummaryOpen}
-            theme="Black"
-            style="Muted"
+            variant="Muted"
+            emphasis
           >
             <MaterialIcon
               icon="keyboard_arrow_down"