feat: add PDF password prompt and centralized pdf-lib loader with auto-repair

src/js/logic/edit-metadata-page.ts

@@ -229,9 +229,7 @@ async function updateUI() {
       showLoader('Loading PDF...');
       result.pdf.destroy();
       pageState.file = result.file;
-      pageState.pdfDoc = await loadPdfDocument(result.bytes, {
-        throwOnInvalidObject: false,
-      });
+      pageState.pdfDoc = await loadPdfDocument(result.bytes);
       hideLoader();
 
       const pageCount = pageState.pdfDoc.getPageCount();