fix(ecstore): silence two dead_code warnings left on main (#6153)

crates/ecstore/src/bucket/lifecycle/bucket_lifecycle_ops.rs

@@ -4379,6 +4379,10 @@ pub async fn expire_transitioned_object(
     Ok(dobj)
 }
 
+#[allow(
+    dead_code,
+    reason = "MinIO-parity tier/lifecycle entry point that this port never wired (backlog#1823)"
+)]
 pub fn gen_transition_objname(bucket: &str) -> Result<String, Error> {
     let us = Uuid::new_v4().to_string();
     let mut hasher = Sha256::new();