Pass more params to compaction (#14247)

Pass more params to /compact. This should give us parity with the
/responses endpoint to improve caching.

I'm torn about the MCP await. Blocking will give us parity but it seems
like we explicitly don't block on MCPs. Happy either way

codex-rs/core/src/codex.rs

@@ -6227,7 +6227,7 @@ async fn run_sampling_request(
     }
 }
 
-async fn built_tools(
+pub(crate) async fn built_tools(
     sess: &Session,
     turn_context: &TurnContext,
     input: &[ResponseItem],