fix(rust): should not hard code output.dir

crates/rolldown/src/utils/normalize_options.rs

@@ -78,7 +78,7 @@ pub fn normalize_options(
       .chunk_file_names
       .unwrap_or_else(|| "[name]-[hash].js".to_string())
       .into(),
-    dir: "dist".to_string(),
+    dir: raw_output.dir.unwrap_or_else(|| "dist".to_string()),
     format: raw_output.format.unwrap_or(crate::OutputFormat::Esm),
     sourcemap: raw_output.sourcemap.unwrap_or(SourceMapType::Hidden),
   };