fix: display color emoji on web

web/flutter_bootstrap.js

@@ -0,0 +1,17 @@
+{{flutter_js}}
+{{flutter_build_config}}
+
+// Customize the app initialization process
+_flutter.loader.load({
+   serviceWorkerSettings: {
+      serviceWorkerVersion: {{flutter_service_worker_version}},
+   },
+    onEntrypointLoaded: async function(engineInitializer) {
+        const appRunner = await engineInitializer.initializeEngine({
+            useColorEmoji: true
+        });
+
+        await appRunner.runApp();
+    }
+
+});