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/auth/CountryDropdown.tsx

@@ -164,6 +164,7 @@ export default class CountryDropdown extends React.Component<IProps, IState> {
                 searchEnabled={true}
                 disabled={this.props.disabled}
                 label={_t("Country Dropdown")}
+                autoComplete="tel-country-code"
             >
                 {options}
             </Dropdown>