"secure coding" warning message when starting jlab on MacOS Sonoma

[russ-schumacher]

Description

After upgrading to MacOS Sonoma (14.2.1), when running "jlab" from the command line, it throws a warning message:
"WARNING: Secure coding is not enabled for restorable state! Enable secure coding by implementing NSApplicationDelegate.applicationSupportsSecureRestorableState: and returning YES."

Reproduce

1. Run "jlab" from the command line.
2. The warning message appears in the terminal window.

Expected behavior

No warning message.

Context

• Operating System and version: MacOS Sonoma, 14.2.1
• JupyterLab-Desktop version: 4.0.7-1
• Installer: installed from .dmg file

When starting jlab from the command line, it gives this warning message, but otherwise everything works fine. It's possible that this warning message can be safely ignored, but it's possible that there's a security issue (or just that more security checks were added in Sonoma.) From googling this issue, there are other reports of it for other software packages (e.g., matplotlib/matplotlib#27389), but not a lot of suggested fixes other than ignoring it. One comment also indicates that it's fixed with python 3.12.

The warning also appears when running other commands like "jlab env info".

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[JasonWeill]

matplotlib fixed this warning in matplotlib/matplotlib#27670.