crash when saving 0 recent files

[unrushed-boots]

OrcaSlicer Version

1.9.0

OS version

windows 11

Additional system information

No response

Printer

bambu x1c

How to reproduce

1. open orca slicer
2. open preferences dialog
3. set maximum recent projects to 0
4. close orcaslicer and try to reopen it

Actual results

orca crashes on startup

Expected results

should be able to NOT save any project history.

Project file & Debug log uploads

n/a

Checklist of files to include

• [ ] Log file
• [ ] Project file