Enable emoji insertion menu item for nativetext manual test

Change-Id: I5a8a2179d60ca352da88dc45e42de87b81c6eca4
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

tests/manual/textrendering/nativetext/main.cpp

@@ -253,6 +253,10 @@ public:
         mainLayout->setSizeConstraint(QLayout::SetFixedSize);
         setLayout(mainLayout);
 
+        // Enable emoji insertion shortcut on macOS
+        auto *menuBar = new QMenuBar(this);
+        menuBar->addMenu("Edit");
+
         setMode(TextRenderer::QtRendering);
         setFocusPolicy(Qt::StrongFocus);
         setFocus();