✨(frontend) fix toggle panel button a11y with dynamic label and aria-expanded

improves screen reader support by updating label and state indication dynamically

Signed-off-by: Cyril <[email protected]>

Author: Ovgodd

src/frontend/apps/impress/src/features/header/components/ButtonTogglePanel.tsx

@@ -12,7 +12,10 @@ export const ButtonTogglePanel = () => {
     <Button
       size="medium"
       onClick={() => togglePanel()}
-      aria-label={t('Open the header menu')}
+      aria-label={t(
+        isPanelOpen ? 'Close the header menu' : 'Open the header menu',
+      )}
+      aria-expanded={isPanelOpen}
       color="tertiary-text"
       icon={
         <Icon