refactor(body): fix unused sync_wrapper when stream feature disabled (#2287)

src/common/mod.rs

@@ -13,6 +13,7 @@ pub(crate) mod exec;
 pub(crate) mod io;
 mod lazy;
 mod never;
+#[cfg(feature = "stream")]
 pub(crate) mod sync_wrapper;
 pub(crate) mod task;
 pub(crate) mod watch;