[Bug] [[format_write]] is broken

[meganukebmp]

Operating System

Windows

What's the issue you encountered?

Reopening #1694 as it appears to still be broken

How can the issue be reproduced?

fn baud_write(str value) {
    return 5;
};

u16 baud_rate @ 0x08 [[format_write("baud_write")]];

does not work

ImHex Version

1.37.4

ImHex Build Type

• Nightly or built from sources

Installation type

MSI

Additional context?

No response