Auto merge of #132553 - EFanZh:zero-cost-rc-arc-deref, r=<try>

Make `Rc<T>::deref` and `Arc<T>::deref` zero-cost

Author: rust-bors[bot]

library/alloc/src/lib.rs

@@ -203,6 +203,8 @@
 #[macro_use]
 mod macros;
 
+#[cfg(not(no_rc))]
+mod raw_rc;
 mod raw_vec;
 
 // Heaps provided for low-level allocation strategies