[White Label -Videocard]: Keyboard focus is not visible on "to" and "From" combo box present under "Translate Audio" pop up

Is it an issue related to Adaptive Cards?

No.

What is the PWD impact?

When the keyboard focus indicator is not visible on the “To” and “From” combo boxes in the “Translate Audio” pop-up, keyboard-only users may be unable to identify which field is currently active, leading to confusion, selection errors, and difficulty completing the translation task.

What browsers and screen readers do this issue affect?

Windows: Edge with Windows Narrator

Are there any code-based customization done to Web Chat?

No, I am using Web Chat without any customizations except "styleOptions".

What version of Web Chat are you using?

Latest production

Which area does this issue affect?

Focus management

What is the public URL for the website?

No response

How to reproduce the issue?

1. Open URL: https://compulim.github.io/webchat-loader/ and sign in using valid credentials.
2. Navigate to web chat page and select 4.18.1-main.20240927.ea7a875 (30/9/2024) version and then select mockBot link under present label and then select open web chat in new window link at bottom.
   3.Navigate to white label experience chat page and type Videocard word in type your message text box.
   4.Navigate on the "translate audio" and activate it.
   5.Observe that Keyboard focus is visible on "To" and "From" combo box present under "translate audio" pop up.

What do you expect?

The “To” and “From” combo boxes in the “Translate Audio” pop-up should display a clear and visible keyboard focus indicator when selected, allowing users to easily identify the active field during keyboard navigation.

What actually happened?

Keyboard focus is not visible on "to" and "From" combo box present under "Translate Audio" pop up

Do you have any screenshots or recordings to repro the issue?

https://github.com/user-attachments/assets/31141234-6277-41e1-b815-9eb14834d8d1

Did you find any DOM elements that might have caused the issue?

No response

MAS reference

No response

WCAG reference

https://www.w3.org/WAI/WCAG21/Understanding/focus-visible

WAI-ARIA reference

No response

Adaptive Card JSON

Additional context

No response

Start with the Translate Audio pop-up in the Web Chat experience and reproduce the missing focus indicator using the provided webchat-loader URL, Edge, and Windows Narrator. Verify that keyboard focus is visibly distinguishable on both the “To” and “From” combo boxes during keyboard navigation.