Fix label prop not being passed to SingleFileInput by MultimodalFileInput

Author: jpenilla

web/src/lib/components/files/MultimodalFileInput.svelte

@@ -112,7 +112,7 @@
 </div>
 
 {#snippet fileInput()}
-    <SingleFileInput required bind:file={instance.file} />
+    <SingleFileInput required {label} bind:file={instance.file} />
 {/snippet}
 
 {#snippet urlInput()}