[Editor] Fix displaying & editing project User Settings

[Basewq]

PR Details

[DataMember] makes the user settings appear again, probably was caused by #1875

Related Issue

Fixes #2347

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.

[Eideren]

Yep, good catch, thanks !

[tebjan]

This seems to be an issue again.

[tebjan]

Nevermind, it works. The platform-specific project, e.g. MyGame.Windows needs to be selected.