fix: set pdf worker path synchronously

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/helpers/pdfWorker.ts

@@ -3,6 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 import { setWorkerPath } from '@libresign/pdf-elements'
+import pdfWorkerUrl from 'pdfjs-dist/legacy/build/pdf.worker.min.mjs?url'
 
 let configured = false
 
@@ -11,11 +12,5 @@ export const ensurePdfWorker = (): void => {
 		return
 	}
 	configured = true
-	import('pdfjs-dist/legacy/build/pdf.worker.min.mjs?url')
-		.then((mod) => {
-			setWorkerPath(mod.default as string)
-		})
-		.catch((error) => {
-			console.error('Failed to load pdf.js worker URL:', error)
-		})
+	setWorkerPath(pdfWorkerUrl)
 }