chore(web): migration svelte 5 syntax (#13883)

web/src/lib/components/onboarding-page/onboarding-card.svelte

@@ -1,9 +1,15 @@
 <script lang="ts">
   import Icon from '$lib/components/elements/icon.svelte';
+  import type { Snippet } from 'svelte';
   import { fade } from 'svelte/transition';
 
-  export let title: string | undefined = undefined;
-  export let icon: string | undefined = undefined;
+  interface Props {
+    title?: string | undefined;
+    icon?: string | undefined;
+    children?: Snippet;
+  }
+
+  let { title = undefined, icon = undefined, children }: Props = $props();
 </script>
 
 <div
@@ -23,5 +29,5 @@
       {/if}
     </div>
   {/if}
-  <slot />
+  {@render children?.()}
 </div>