ARIA Accessibility improvements (#10674)

* Add missing aria-expanded attributes

* Improve autoComplete for phone numbers & email addresses

* Fix room summary card heading order

* Fix missing label on timeline search field

* Use appropriate semantic elements for dropdown listbox

* Use semantic list elements in keyboard settings tab

* Use semantic list elements in spotlight

* Fix types and i18n

* Improve types

* Update tests

* Add snapshot test

src/components/views/right_panel/BaseCard.tsx

@@ -47,7 +47,7 @@ interface IGroupProps {
 export const Group: React.FC<IGroupProps> = ({ className, title, children }) => {
     return (
         <div className={classNames("mx_BaseCard_Group", className)}>
-            <h1>{title}</h1>
+            <h2>{title}</h2>
             {children}
         </div>
     );