revert /name for now (#4978)

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

codex-rs/tui/src/app.rs

@@ -381,9 +381,6 @@ impl App {
             AppEvent::OpenReviewCustomPrompt => {
                 self.chat_widget.show_review_custom_prompt();
             }
-            AppEvent::SetSessionName(name) => {
-                self.chat_widget.begin_set_session_name(name);
-            }
             AppEvent::FullScreenApprovalRequest(request) => match request {
                 ApprovalRequest::ApplyPatch { cwd, changes, .. } => {
                     let _ = tui.enter_alt_screen();