Formatting a line comment inbetween a function parameter and its type results in the type being commented out

Formatting

```rust
fn foo(x: //comment here
u32) {} 
```
results in (on playground `1.8.0-nightly (2025-03-22 b48576b4db)`)
```rust
pub fn foo(x: //comment here u32
) {
}
```

I agree this is a remarkably weird place to put a comment, but it should at least not result in breaking compilation.