Accessability fixes (#4432)

* fix(modal_root): Read type from props, not from component

* fix(status_list): Do not user event.path

app/javascript/mastodon/features/ui/components/modal_root.js

@@ -53,7 +53,7 @@ export default class ModalRoot extends React.PureComponent {
   }
 
   componentDidUpdate (prevProps) {
-    if (!this.type && !!prevProps.type) {
+    if (!this.props.type && !!prevProps.type) {
       this.getSiblings().forEach(sibling => sibling.removeAttribute('inert'));
       this.activeElement.focus();
       this.activeElement = null;