fix(web): back button from person detail page (#5047)

* feat: return button to the main page

* add album route

* feat: do not use explicit routes

web/src/routes/(user)/people/[personId]/+page.svelte

@@ -34,6 +34,7 @@
   import { assetViewingStore } from '$lib/stores/asset-viewing.store';
   import LoadingSpinner from '$lib/components/shared-components/loading-spinner.svelte';
   import { mdiPlus, mdiDotsVertical, mdiArrowLeft } from '@mdi/js';
+  import { isExternalUrl } from '$lib/utils/navigation';
 
   export let data: PageData;
 
@@ -126,7 +127,7 @@
   onMount(() => {
     const action = $page.url.searchParams.get('action');
     const getPreviousRoute = $page.url.searchParams.get('previousRoute');
-    if (getPreviousRoute) {
+    if (getPreviousRoute && !isExternalUrl(getPreviousRoute)) {
       previousRoute = getPreviousRoute;
     }
     if (action == 'merge') {