New editor shortcut disappears after restart

### Tested versions

v4.3.stable.official [77dcf97d8]

### System information

Godot v4.3.stable - Pop!_OS 22.04 LTS - X11 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3060 Laptop GPU - AMD Ryzen 7 5800H with Radeon Graphics (16 Threads)

### Issue description

I go to `Editor -> Editor Settings -> Shortcuts`, configure `View Gizmos` to keyboard key `J`.
This binding works well for current session, but when I restart Godot it disappears.

### Steps to reproduce

1. Go to `Editor -> Editor Settings -> Shortcuts`
2. Configure `View Gizmos` to keyboard key `J`
3. Restart editor
4. Check the key binding for `View Gizmos` (it's empty)

### Minimal reproduction project (MRP)

N/A

No source file or test is named in the report. Start by reproducing the shortcut configuration and editor restart through Editor Settings > Shortcuts; trace where the View Gizmos binding is persisted and reloaded. Done means a binding assigned to J remains present after restarting Godot.

Written by the indexing model from the issue text.