Fix pdfjs lib no-loading in static build. Using classic Service Worker

src/lib/pages/print/PrintMenu.svelte

@@ -8,7 +8,7 @@
 
 	let { onBack = () => {} } = $props();
 	const store = createPrintStore();
-	let fileInput;
+	let fileInput = $state(null);
 
 	function handleFileSelect(event) {
 		store.addFiles(event.target.files);