badge: fix expanded's doc comment after the chevron removal

argus: half the sentence still described the deleted caret.

frontend/packages/shared/src/badge/Badge.tsx

@@ -54,7 +54,7 @@ export interface BadgeProps {
    * `aria-expanded`'s outline/bg (Badge.css) are the only affordance.
    */
   onClick?: (e: MouseEvent) => void;
-  /** Only meaningful with `onClick` — drives the caret direction + `aria-expanded`. */
+  /** Only meaningful with `onClick` — drives `aria-expanded`. */
   expanded?: boolean;
   disabled?: boolean;
   class?: string;