サインアップ・ログアウト周りの怪しい挙動を修正 (#7750)

* fix #7749

* fix

* fix logout behavior when there is no push subscription

* fix logout behavior when there is no push subscription 2

* clean up service worker registration

* fix lint

* remove submodules

src/client/pages/welcome.setup.vue

@@ -53,7 +53,7 @@ export default defineComponent({
 				username: this.username,
 				password: this.password,
 			}).then(res => {
-				login(res.i);
+				return login(res.token);
 			}).catch(() => {
 				this.submitting = false;