test(native): assert both parameters in prototype arrow test (#1345)

Author: carlos-alm

crates/codegraph-core/src/extractors/javascript.rs

@@ -2700,6 +2700,10 @@ mod tests {
             children.iter().any(|c| c.name == "a"),
             "C.bar should have parameter 'a'; got: {:?}", children
         );
+        assert!(
+            children.iter().any(|c| c.name == "b"),
+            "C.bar should have parameter 'b'; got: {:?}", children
+        );
     }
 
     #[test]