fix(lib): pass raw duped fd to _fdopen

Attempting to call `_get_osfhandle(fd)` leads to a stack overflow

crates/cli/src/tests/parser_test.rs

@@ -88,7 +88,6 @@ fn test_parsing_with_logging() {
 }
 
 #[test]
-#[cfg(unix)]
 fn test_parsing_with_debug_graph_enabled() {
     use std::io::{BufRead, BufReader, Seek};