[CoR] Chat does not automatically scroll to approval requests

OS: Win11 x64
VS Code Insider: 1.133.0-insider
Build Version: 0.12.8-alpha.0

Repro Steps:

1. Create a new Azure Project.
2. Generate a project plan.
3. Wait for a tool approval prompt to appear.
4. Observe the Chat panel.

Expect:
Approval requests should be automatically brought into view, or a clear notification should indicate that user action is required.

Actual:
When an approval request is generated in Chat, the approval card may appear outside the visible Chat area and is not automatically brought into view. Users must manually scroll down or click the "Scroll to Latest Message" button to discover and respond to the request.

More Info:

1. This issue is intermittent and does not reproduce consistently.
2. This issue is not specific to project plan generation and may affect any workflow step that requires user approval through the Chat panel. If the approval request is out of view, users may not realize that the workflow is waiting for input and may assume it is stuck.

Start by reproducing the project-plan workflow in the VS Code Chat panel and inspect how approval requests are rendered and brought into view. Verify the behavior with approval prompts that appear below the visible area; done means the request is automatically visible or a clear notification tells the user action is required.