[Windows Terminal>Settings] Screen reader is not announcing the 'Open/Close' state on activating the 'Open/Close' navigation button.

[Saurabh220304]

Windows Terminal version

1.25.3571.0

Windows build number

Windows 11 Version 26H1 (OS Build 28000.1340)

Other Software

No response

Steps to reproduce

Repro Steps:
1.Launch the Window terminal app.
2.Navigate to the 'New Open Tab' and select the 'Settings' menu item.
3.Settings page will open.
4.Now turn on the narrator using 'CTRL+Win+Enter' keys.
4.Now navigate to the 'Open/Close' navigation button and press enter.
5.Observe the issue here.

User Experience:
Screen reader users cannot determine whether the navigation panel is open or closed, leading to confusion and difficulty in navigating the interface. This impacts efficiency and independence.

WCAG Reference Link:
https://www.w3.org/WAI/WCAG21/Understanding/name-role-value

Attachements:
https://microsoftapc-my.sharepoint.com/:u:/g/personal/v-heparihar_microsoft_com/IQDLd9wWKN2AQ5st84Yv_lwwAXMfAiE1AuV8JoNjoRTKxW0?e=pQZpOf

Expected Behavior

The 'Open/Close' navigation button should programmatically expose its state (open or closed) using appropriate ARIA attributes (e.g., aria-expanded="true" or aria-expanded="false") so that assistive technologies announce the state change when the button is activated.

Actual Behavior

When the user activates the 'Open/Close' navigation button, the screen reader remains silent. It does not announce whether the navigation panel is open or closed. The button label is announced only when it receives keyboard focus for the first time.