test(tui): accept StartChoice as the post-login onboarding phase

Commit 2c96c68 made onboarding_after_login advance through ModelSelect
into the new StartChoice phase, leaving this assertion stale.

Author: 1jehuang

crates/jcode-tui/src/tui/app/tests/onboarding_flow.rs

@@ -285,11 +285,14 @@ fn login_phase_advances_to_model_select_without_telemetry_prompt() {
             Some(OnboardingPhase::Login { .. })
         ));
         // After login we no longer ask a telemetry-consent question; we advance
-        // straight to model selection and leave content sharing off.
+        // straight through model selection into the first-run start choice and
+        // leave content sharing off.
         app.onboarding_after_login();
         assert!(matches!(
             app.onboarding_phase(),
-            Some(OnboardingPhase::ModelSelect) | Some(OnboardingPhase::Suggestions)
+            Some(OnboardingPhase::ModelSelect)
+                | Some(OnboardingPhase::Suggestions)
+                | Some(OnboardingPhase::StartChoice { .. })
         ));
         assert!(!crate::telemetry::content_sharing_enabled());
     });