feat: redesign asset-viewer previous/next and hide when nav not possible (#24903)

web/src/lib/components/share-page/individual-shared-viewer.svelte

@@ -144,13 +144,7 @@
   {:else if assets.length === 1}
     {#await getAssetInfo({ ...authManager.params, id: assets[0].id }) then asset}
       {#await import('$lib/components/asset-viewer/asset-viewer.svelte') then { default: AssetViewer }}
-        <AssetViewer
-          cursor={{ current: asset }}
-          onAction={handleAction}
-          onPrevious={() => Promise.resolve(false)}
-          onNext={() => Promise.resolve(false)}
-          onRandom={() => Promise.resolve(undefined)}
-        />
+        <AssetViewer cursor={{ current: asset }} onAction={handleAction} />
       {/await}
     {/await}
   {/if}