error into auto-suggestion the amazon q

## Problem

## Steps to reproduce the issue

Amazon's auto-suggestion is not working! I'm using Next with Typescript in VS Code and it says unsupported language! I always have to log out of Amazon Q, restart VS Code, and log back into Amazon Q for it to work.

## Expected behavior

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

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

OS: Windows_NT x64 10.0.26100
Visual Studio Code extension host: 1.104.2
Amazon Q: 1.96.0
node: 22.18.0
electron: 37.3.1

Start by reproducing the Amazon Q auto-suggestion failure in VS Code with a Next TypeScript project on the listed Windows, VS Code extension host, Amazon Q, Node, and Electron versions. Check whether suggestions report an unsupported language and whether signing out, restarting VS Code, and signing back in restores them; done means suggestions work without that workaround.

Written by the indexing model from the issue text.