revert /name for now (#4978)

There was a regression where we'd read entire rollout contents if there
was no /name present.

codex-rs/core/src/rollout/policy.rs

@@ -39,7 +39,6 @@ pub(crate) fn should_persist_event_msg(ev: &EventMsg) -> bool {
         | EventMsg::AgentMessage(_)
         | EventMsg::AgentReasoning(_)
         | EventMsg::AgentReasoningRawContent(_)
-        | EventMsg::SessionRenamed(_)
         | EventMsg::TokenCount(_)
         | EventMsg::EnteredReviewMode(_)
         | EventMsg::ExitedReviewMode(_)