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/rooms/SearchBar.tsx

@@ -121,6 +121,9 @@ export default class SearchBar extends React.Component<IProps, IState> {
                             type="text"
                             autoFocus={true}
                             placeholder={_t("Search…")}
+                            aria-label={
+                                this.state.scope === SearchScope.Room ? _t("Search this room") : _t("Search all rooms")
+                            }
                             onKeyDown={this.onSearchChange}
                         />
                         <AccessibleButton