fix: enhance accessibility for menu items with keyboard support (Redocly#2655)

Author: ImBIOS

src/components/SideMenu/MenuItem.tsx

@@ -2,14 +2,14 @@ import { observer } from 'mobx-react';
 import * as React from 'react';
 
 import { ShelfIcon } from '../../common-elements/shelfs';
+import type { IMenuItem } from '../../services';
 import { OperationModel } from '../../services';
-import { shortenHTTPVerb } from '../../utils/openapi';
-import { MenuItems } from './MenuItems';
-import { MenuItemLabel, MenuItemLi, MenuItemTitle, OperationBadge } from './styled.elements';
 import { l } from '../../services/Labels';
 import { scrollIntoViewIfNeeded } from '../../utils';
+import { shortenHTTPVerb } from '../../utils/openapi';
 import { OptionsContext } from '../OptionsProvider';
-import type { IMenuItem } from '../../services';
+import { MenuItems } from './MenuItems';
+import { MenuItemLabel, MenuItemLi, MenuItemTitle, OperationBadge } from './styled.elements';
 
 export interface MenuItemProps {
   item: IMenuItem;
@@ -47,9 +47,18 @@ export class MenuItem extends React.Component<MenuItemProps> {
       <MenuItemLi
         tabIndex={0}
         onClick={this.activate}
+        onKeyDown={evt => {
+          // Space or Enter key will activate the menu item
+          if (evt.key === 'Enter' || evt.key === ' ') {
+            this.props.onActivate!(this.props.item);
+            evt.stopPropagation();
+          }
+        }}
         depth={item.depth}
         data-item-id={item.id}
         role="menuitem"
+        aria-label={item.sidebarLabel}
+        aria-expanded={item.expanded}
       >
         {item.type === 'operation' ? (
           <OperationMenuItemContent {...this.props} item={item as OperationModel} />