Add PageHeaderOpenCommandMenuButton on Record index page header for command menu v1 (#10576)

The only way to open the command menu in v1 on the index page was
through the shortcut, but since important actions (export and see
deleted records) have been moved to the command menu, we want an easy
way to open it on v1.


https://github.com/user-attachments/assets/b446f385-da69-4dcc-af9d-74d36b52e94f

packages/twenty-front/src/modules/object-record/record-index/components/RecordIndexPageHeader.tsx

@@ -67,11 +67,10 @@ export const RecordIndexPageHeader = () => {
         ))}
 
       {isCommandMenuV2Enabled && (
-        <>
-          <RecordIndexActionMenu indexId={recordIndexId} />
-          <PageHeaderOpenCommandMenuButton />
-        </>
+        <RecordIndexActionMenu indexId={recordIndexId} />
       )}
+
+      <PageHeaderOpenCommandMenuButton />
     </PageHeader>
   );
 };

packages/twenty-front/src/modules/ui/layout/page-header/components/PageHeaderOpenCommandMenuButton.tsx

@@ -2,6 +2,7 @@ import {
   AnimatedButton,
   IconButton,
   IconDotsVertical,
+  IconX,
   getOsControlSymbol,
   useIsMobile,
 } from 'twenty-ui';
@@ -144,7 +145,7 @@ export const PageHeaderOpenCommandMenuButton = () => {
         />
       ) : (
         <IconButton
-          Icon={IconDotsVertical}
+          Icon={isCommandMenuOpened ? IconX : IconDotsVertical}
           size="medium"
           dataTestId="more-showpage-button"
           accent="default"