Right clicking on Chat closes entire chat page

## Problem
Right clicking on the chat itself to copy all contents closes the chat page

Default View Below

Right Clicked View Below

## Steps to reproduce the issue

1. Go to a new chat
2. Click on the plus sign to add a new chat page
3. Right click on the previous chat
4. Chat closes and conversation history is lost

## Expected behaviour
Copy, Cut, Paste Options to allow chat content extraction

## System details

- OS: macOs Sequoia 15.2
- Visual Studio Code version: 1.95.3
- Amazon Q version: 1.46.0

Reproduce the issue by opening a new chat, adding a chat page with the plus sign, and right-clicking the previous chat. Trace the chat-page behavior involved in that interaction; done means right-clicking preserves the chat and provides copy, cut, and paste options for extracting its contents.

Written by the indexing model from the issue text.