fix: unregister existing sws

src/routes/+page.svelte

@@ -15,6 +15,11 @@
 			//Service Worker
 			if ('serviceWorker' in navigator) {
 				console.log('registering service worker...');
+				navigator.serviceWorker.getRegistrations().then((registrations) => {
+					for (let registration of registrations) {
+						registration.unregister();
+					}
+				});
 				navigator.serviceWorker.register('src/sw.js');
 			} else {
 				console.log('service worker not supported');