Update to JupyterLab 4.0.0a31

[jtpio]

A meta issue to keep track of items when updating to the next JupyterLab 4.0 pre-release:

• Running Panel sections not accessible at browser zoom #6559
• Check notifications: Add notification queue and display using toast jupyterlab/jupyterlab#12959
• Allow empty notebook jupyterlab/jupyterlab#13141
• shared-models move: Extract @jupyterlab/shared-models to @jupyter-notebook/ydoc jupyterlab/jupyterlab#13389
• User service: User service jupyterlab/jupyterlab#12926
• File ID: Use file ID jupyterlab/jupyterlab#13246, Add jupyter-server-fileid to Binder jupyterlab/jupyterlab#13370
• Do not load CSS of disabled federated extensions jupyterlab/jupyterlab#11962
• More from https://github.com/jupyterlab/jupyterlab/releases/tag/v4.0.0a31