Arrow keys work without Fn outside Text Entry

; . , / are arrows on their own unless the foreground App is editing
text (App::textEntryActive); Fn + those keys are arrows everywhere.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

src/apps/setup_app.h

@@ -13,6 +13,9 @@ class SetupApp : public App {
    public:
     SetupApp(Settings& settings, AppManager& apps);
     bool onKey(const KeyEvent& e) override;
+    bool textEntryActive() const override {
+        return wizard_.step() == SetupWizard::Step::LongName || wizard_.step() == SetupWizard::Step::ShortName;
+    }
     void draw(Canvas& c) override;
 
    private: