[gh-aw] Protected Files: fix: defer chat list height update to next animation frame (fixes #316501)

> [!WARNING]
> **Protected Files**
>
> The push to pull request branch was blocked because the patch modifies protected files.
>
> **Target Pull Request:** [#316671](https://github.com/microsoft/vscode/pull/316671)
>
> **Please review the changes carefully** before pushing them to the pull request branch. These files may affect project dependencies, CI/CD pipelines, or agent behaviour.
>
>
> Protected files
>
> - `README.md`
- `package-lock.json`
- `package.json`
- `AGENTS.md`
- `CONTRIBUTING.md`
- `CODEOWNERS`
- `pnpm-lock.yaml`
- [.vscode/launch.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/launch.json)
- [.vscode/notebooks/endgame.github-issues](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/notebooks/endgame.github-issues)
- [.vscode/notebooks/my-endgame.github-issues](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/notebooks/my-endgame.github-issues)
- [.eslint-plugin-local/code-no-direct-gulp-import.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.eslint-plugin-local/code-no-direct-gulp-import.ts)
- [.vscode/extensions/vscode-pr-pinger/package-lock.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/extensions/vscode-pr-pinger/package-lock.json)
- [.vscode/extensions/vscode-pr-pinger/package.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/extensions/vscode-pr-pinger/package.json)
- [.eslint-plugin-local/index.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.eslint-plugin-local/index.ts)
- [.vscode/extensions/vscode-extras/src/npmUpToDateFeature.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/extensions/vscode-extras/src/npmUpToDateFeature.ts)
- [.devcontainer/README.md](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.devcontainer/README.md)
- [.agents/skills/launch/SKILL.md](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.agents/skills/launch/SKILL.md)
- [.agents/skills/launch/scripts/launch.sh](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.agents/skills/launch/scripts/launch.sh)
- [.agents/skills/launch/scripts/monaco-paste.sh](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.agents/skills/launch/scripts/monaco-paste.sh)
- [.devcontainer/Dockerfile](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.devcontainer/Dockerfile)
- [.vscode/extensions/vscode-selfhost-test-provider/package-lock.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/extensions/vscode-selfhost-test-provider/package-lock.json)
- [.vscode/extensions/vscode-selfhost-test-provider/package.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/extensions/vscode-selfhost-test-provider/package.json)
- [.vscode/settings.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/settings.json)
- [.scratch-theme-test/sample.cpp](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.cpp)
- [.scratch-theme-test/sample.css](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.css)
- [.scratch-theme-test/sample.go](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.go)
- [.scratch-theme-test/sample.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.json)
- [.scratch-theme-test/sample.md](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.md)
- [.scratch-theme-test/sample.py](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.py)
- [.scratch-theme-test/sample.sh](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.sh)
- [.scratch-theme-test/sample.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.scratch-theme-test/sample.ts)
- [.vscode/tasks.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/tasks.json)
- [.eslint-plugin-local/code-no-new-javascript-files.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.eslint-plugin-local/code-no-new-javascript-files.ts)
- [.vscode/notebooks/api.github-issues](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/notebooks/api.github-issues)
- [.eslint-plugin-local/code-no-untyped-meta-access.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.eslint-plugin-local/code-no-untyped-meta-access.ts)
- [.vscode/cglicenses.schema.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.vscode/cglicenses.schema.json)
- [.eslint-plugin-local/code-no-deprecated-copilot-sdk.ts](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.eslint-plugin-local/code-no-deprecated-copilot-sdk.ts)
- [.devcontainer/devcontainer-lock.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.devcontainer/devcontainer-lock.json)
- [.devcontainer/devcontainer.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.devcontainer/devcontainer.json)
- [.eslint-plugin-local/package.json](https://github.com/microsoft/vscode/blob/fix/resize-observer-loop-316501-e5237abb1e1fd22a/.eslint-plugin-local/package.json)
>
>

---

Apply the patch after review

The patch is available in the workflow run artifacts:

**Workflow Run:** [View run details and download patch artifact](https://github.com/microsoft/vscode-engineering/actions/runs/30427724816)

```sh
# Download the artifact from the workflow run
gh run download 30427724816 -n agent -D /tmp/agent-30427724816

# Apply the patch to the pull request branch
git fetch origin fix/resize-observer-loop-316501-e5237abb1e1fd22a
git checkout fix/resize-observer-loop-316501-e5237abb1e1fd22a
git am --3way /tmp/agent-30427724816/aw-microsoft-vscode-fix-resize-observer-loop-316501-e5237abb1e1fd22a.patch
git push origin fix/resize-observer-loop-316501-e5237abb1e1fd22a
```

To route changes like this to a review issue instead of blocking, configure `protected-files: fallback-to-issue` in your workflow configuration.

Start by reviewing target pull request #316671 and the patch artifact from workflow run 30427724816. Inspect the listed protected files and the proposed changes before applying anything; done means the pull request contains the reviewed fix and its branch can be updated successfully.

Written by the indexing model from the issue text.