enhance(client): suspense

Fix https://github.com/misskey-dev/misskey/issues/8817

CHANGELOG.md

@@ -38,6 +38,7 @@ You should also include the user name that made the change.
 - Server: Ensure temp directory cleanup @Johann150
 - favicons of federated instances not showing @syuilo
 - Client: fix switch to receive email notifications @syuilo
+- Client: Page freezes when trying to open configuration page of existing webhooks @syuilo
 
 ## 12.111.1 (2022/06/13)
 

packages/client/src/components/global/router-view.vue

@@ -1,6 +1,12 @@
 <template>
 <KeepAlive :max="defaultStore.state.numberOfPageCache">
+	<Suspense>
 		<component :is="currentPageComponent" :key="key" v-bind="Object.fromEntries(currentPageProps)"/>
+
+		<template #fallback>
+			Loading...
+		</template>
+	</Suspense>
 </KeepAlive>
 </template>