SA4023: false positive involving generics

```
package main

func foo[T any](x T) {
	if any(x) == nil {
		println("is nil")
	}
}

func main() {
	foo[error](nil)
}
```

```
$ go run baz.go
is nil
```

```
$ run-dev-staticcheck baz.go
baz.go:4:5: this comparison is never true (SA4023)
	baz.go:3:17: the lhs of the comparison gets its value from here and has a concrete type
```