Maps -> Add New hardcrashes and requires Reload

[LLTms23]

Describe the bug
Cannot add new maps via Map -> Add New (button at the bottom).

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Maps'.
2. Scroll down to the 'Add New' button.
3. Click it and crash.

Expected behavior
Assuming it is meant to open the same GameMapDefinition window as through Full Configuration -> Maps -> Create.

Desktop (please complete the following information):

• OS: Win11
• Browser: Edge (Yes, I'm one of those people. Hate Google and Firefox isn't great anymore...)
• Version: 142.0.3595.80