Unable to input grayscale PNG

[2ndR]

Describe the bug
The binary in the link below allows it, but the google/jpegli one does not allow grayscale input.
https://github.com/libjxl/libjxl/releases/download/v0.10.3/jxl-x64-windows-static.zip

To Reproduce
The following message appears when a grayscale PNG image is input
libpng warning: iCCP: profile 'icc': 'GRAY': Gray color space not permitted on RGB PNG
Failed to decode input image S:\Temp\18.png

Environment

• OS:Windows 10 Pro 22H2
• CPU type: AMD64
• cjxl/djxl version string: 3e50579