[Fluent UI] Focus animation should not show if focus is inside send box

Is it an issue related to Adaptive Cards?

No

Is this an accessibility issue?

No

What version of Web Chat are you using?

Development build

Which distribution are you using Web Chat from?

Unrelated

Which hosting environment does this issue primarily affect?

Others or unrelated

Which browsers and platforms do the issue happened?

Others or unrelated

Which area does this issue affect?

Send box

Which theme pack does this issue affect?

Fluent UI

What is the public URL for the website?

No response

Please describe the bug

Click on the area inside the send box but outside of the <textarea> should not restart the focus animation.

Do you see any errors in console log?

No response

How to reproduce the issue?

1. Focus on the send box
2. Click on the area inside the send box but outside of the <textarea>

What do you expect?

The focus animation should not replay.

What actually happened?

The focus animation is replayed.

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

https://github.com/microsoft/BotFramework-WebChat/assets/1622400/11c3b72d-a4de-4b92-a7a0-e3654916ebf2

Adaptive Card JSON

No response

Additional context

No response

Start at the Fluent UI send box entry point and reproduce the interaction described: focus the send box, then click inside its area outside the textarea. Trace which focus state or animation is triggered by that click, and verify that the existing focus animation remains unchanged while the animation no longer replays.