activate the menu item for presentation

packages/app/src/components/Navbar/GrowiContextualSubNavigation.tsx

@@ -36,7 +36,6 @@ import HistoryIcon from '../Icons/HistoryIcon';
 import PresentationIcon from '../Icons/PresentationIcon';
 import ShareLinkIcon from '../Icons/ShareLinkIcon';
 import { NotAvailable } from '../NotAvailable';
-import { NotAvailableForNow } from '../NotAvailableForNow';
 import { Skeleton } from '../Skeleton';
 
 import type { AuthorInfoProps } from './AuthorInfo';
@@ -90,18 +89,16 @@ const PageOperationMenuItems = (props: PageOperationMenuItemsProps): JSX.Element
   return (
     <>
       {/* Presentation */}
-      <NotAvailableForNow>
-        <DropdownItem
-          onClick={() => openPresentationModal(hrefForPresentationModal)}
-          data-testid="open-presentation-modal-btn"
-          className="grw-page-control-dropdown-item"
-        >
-          <i className="icon-fw grw-page-control-dropdown-icon">
-            <PresentationIcon />
-          </i>
-          { t('Presentation Mode') }
-        </DropdownItem>
-      </NotAvailableForNow>
+      <DropdownItem
+        onClick={() => openPresentationModal(hrefForPresentationModal)}
+        data-testid="open-presentation-modal-btn"
+        className="grw-page-control-dropdown-item"
+      >
+        <i className="icon-fw grw-page-control-dropdown-icon">
+          <PresentationIcon />
+        </i>
+        { t('Presentation Mode') }
+      </DropdownItem>
 
       {/* Export markdown */}
       <DropdownItem