Fix usages of ARIA tabpanel (#10628)

* RovingTabIndex handle looping around start/end

* Make TabbedView expose aria tabpanel/tablist/tab roles

* Fix right panel being wrongly specified as aria tabs

Not all right panels map to the top right header buttons so we cannot describe it as a tabpanel relation

* tsc strict

* Update snapshots

* Fix ARIA AXE violation

* Update tests

src/components/views/right_panel/HeaderButtons.tsx

@@ -98,10 +98,6 @@ export default abstract class HeaderButtons<P = {}> extends React.Component<IPro
     public abstract renderButtons(): JSX.Element;
 
     public render(): React.ReactNode {
-        return (
-            <div className="mx_HeaderButtons" role="tablist">
-                {this.renderButtons()}
-            </div>
-        );
+        return <div className="mx_HeaderButtons">{this.renderButtons()}</div>;
     }
 }