Bug report

Describe the bug
EXIF Byte field is always formatted as a display string. For example the EXIF tag "exif-ifd3-GPSAltitudeRef" outputs "Sea level (Sea level, Byte, 1 components, 1 bytes)". For consistency with other types, I would've expected "0 (Sea level, Byte, 1 components, 1 bytes)", where the number comes first, and the display name is in the parentheses. I'm not sure if this intentional, but it makes parsing byte tags a lot more complicated.

To Reproduce
Steps to reproduce the behavior:

1. Use an image with GPS EXIF data (like an iPhone photo)
2. Read the field "exif-ifd3-GPSAltitudeRef"

Expected behavior
"0 (Sea level, Byte, 1 components, 1 bytes)"

Actual behavior
"Sea level (Sea level, Byte, 1 components, 1 bytes)"

Environment

• OS: macOS 12.7.5
• Vips: 8.15.1