chore(): update stencil (#16506)

core/src/components/loading-controller/readme.md

@@ -8,6 +8,26 @@ Loading controllers programmatically control the loading component. Loadings can
 <!-- Auto Generated Below -->
 
 
+## Usage
+
+### Javascript
+
+```javascript
+async function presentLoading() {
+  const loadingController = document.querySelector('ion-loading-controller');
+  await loadingController.componentOnReady();
+
+  const loadingElement = await loadingController.create({
+    message: 'Please wait...',
+    spinner: 'crescent',
+    duration: 2000
+  });
+  return await loadingElement.present();
+}
+```
+
+
+
 ## Methods
 
 ### `create(opts?: LoadingOptions | undefined) => Promise<HTMLIonLoadingElement>`