Updated webpack-encore recipe.

assets/bootstrap.js

@@ -1,5 +1,11 @@
 import { startStimulusApp } from '@symfony/stimulus-bridge';
-import '@symfony/autoimport';
 
 // Registers Stimulus controllers from controllers.json and in the controllers/ directory
-export const app = startStimulusApp(require.context('./controllers', true, /\.(j|t)sx?$/));
+export const app = startStimulusApp(require.context(
+    '@symfony/stimulus-bridge/lazy-controller-loader!./controllers',
+    true,
+    /\.(j|t)sx?$/
+));
+
+// register any custom, 3rd party controllers here
+// app.register('some_controller_name', SomeImportedController);