docs(vue): update v7 stackblitz templates

Author: brandyscarney

static/code/stackblitz/v7/vue/App.vue

@@ -4,15 +4,7 @@
   </ion-app>
 </template>
 
-<script lang="ts">
-import { IonApp } from '@ionic/vue';
-
-import { defineComponent } from 'vue';
-
-import Example from './components/Example.vue';
-
-export default defineComponent({
-  name: 'App',
-  components: { IonApp, Example },
-});
+<script setup lang="ts">
+  import { IonApp } from '@ionic/vue';
+  import Example from './components/Example.vue';
 </script>

static/code/stackblitz/v7/vue/App.withContent.vue

@@ -6,15 +6,7 @@
   </ion-app>
 </template>
 
-<script lang="ts">
-import { IonApp, IonContent } from '@ionic/vue';
-
-import { defineComponent } from 'vue';
-
-import Example from './components/Example.vue';
-
-export default defineComponent({
-  name: 'App',
-  components: { IonApp, IonContent, Example },
-});
+<script setup lang="ts">
+  import { IonApp, IonContent } from '@ionic/vue';
+  import Example from './components/Example.vue';
 </script>