Chat Window: Chat is not visible in light mode in Xcode

**Describe the bug**
- Git hub co-pilot chat window in Xcode is not responding to the chat, it is actually responding but the chat is not visible in light mode of Xcode, as soon as you switch Xcode to dark mode, the chat appears.

**Versions**
- Copilot for Xcode: [e.g. 0.31.0]
- Xcode: [e.g. 15.2.0]
- macOS: [e.g. 13.7.2]

**Steps to reproduce**
1. Open Xcode in light mode
2. open copilot chat window
3. Enter some keywords, ex: Hello, How are you?
4. Press enter, chat is not visible.
5. Now change the Xcode theme to dark and restart Xcode
6. now open chat and you can see the previous chat.
7. chat is also truncated from left side.

**Screenshots**

**Logs**
Can't add due the company policy

**Additional context**
This is a basic feature and should be available, for light mode users chat window is useless, this should have been covered.