The icon option crashes the toolbar

[crystalfp]

Describe the bug If I put the icon in index.html the toolbar shows it on the left side. If I put it in the options, the entire toolbar disappears.

To Reproduce Steps to reproduce the behavior:

1. Add the following code in preload.is

   new CustomTitlebar({
   icon: nativeImage.createFromPath("<dir>/favicon.ico")
   })

   Cannot check the documentation right now, I'm on vacation with minimal connection

Expected behavior A clear and concise description of what you expected to happen. Well,that it works

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. Windows] windows
• Electron version [e.g. 16.0.0] 25.4.0
• Node Version [e.g. 14.0] 18.15.0