[BUG]Chain Name and File Name Link is not working

[vukhanhtrung]

Describe the Bug
When making Chain, the feature "Link Chain name and File Name" doesn't work. (It still use the Filename attribute instead, even though it's hidden)
To Reproduce
1/ Make new chain
2/ Click the link button
3/ Change the linked name
4/ Export Chain G-Code

Expected Behavior
Expected a file with the linked name, but it has the old/hidden File Name value

System Information:

• OS: Win11
• Blender Version: 5.0.1
• Addon Version: 3.0.2