Nested barrel exports marked as unused

### What happened?

Follow reports a function as unused when it's exported via nested barrel files. 

### Reproduction

https://stackblitz.com/~/github.com/filipw01/fallow-repro

PaletteColorSwatch is reported as unused even though it is used in the other package. 

### Expected behavior

_No response_

### Fallow version

2.56.0

### Operating system

macOS

### Configuration

```toml

```