Null reference exception opening ship list

**Describe the bug**
Opening the ship list can cause a null reference exception.

**Steps to reproduce**
1. Open the attached savegame.
2. Open the ship list.

**Expected behavior**
The ship list appears.

**Actual behavior**
A null reference exception is thrown.

**Screenshots**
N/A

**Related issues**
N/A

**Testing plan**
???

**Additional context**

[fc2_65_0002.gam.zip](https://github.com/user-attachments/files/28016082/fc2_65_0002.gam.zip)