clamp() throwing an incorrect error

It seems that using `clamp()` as a value in both `height` and `font-size` both fail validation. This is likely a problem with `clamp()` across all properties.

Specifically, I'm using the basic examples from MDN as a test case:
```
height: clamp(1rem, 10vw, 2rem);
```
```
font-size: clamp(1rem, 10vw, 2rem);
```