So I just tried replicating your scenario using Unity 2022.3.62f1 and got this result:

I did have to change the range value from 0 to 0.01 to get this result but so did you, so I am not sure why you are experiencing different results. I'm also not sure what you're trying to illustrate with the color picker because the cross section isn't that of the character, all of those color values are off. But the color values in the material look correct and the other settings all appear to be valid as well. It's a mystery! For giggles, what would happen if you start a new project, import only that 1 spritesheet, slice it, import my shaders and then create a gameobject using this sprite and my material. Does it work then? You are using URP right?