scroll bar is not working for aws Q extension in visual studio

## Problem

## Steps to reproduce the issue

## Expected behavior

## System details (run `AWS: About` and/or `Amazon Q: About`)

- OS:
- Visual Studio Code version:
- AWS Toolkit version:
- Amazon Q version:

The report contains no reproduction steps, expected behavior, or system details; start by collecting the VS Code, AWS Toolkit, and Amazon Q versions and reproducing the scrollbar problem in the Amazon Q extension. Done means a reproducible case with the scrollbar working as expected, but no source file or test is identified in the issue.

Written by the indexing model from the issue text.