fix: warm up pdf-elements worker from package

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

Author: vitormattos

src/helpers/pdfWorker.ts

@@ -2,8 +2,7 @@
  * SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
  * 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'
+import { ensureWorkerReady } from '@libresign/pdf-elements'
 
 let configured = false
 
@@ -12,5 +11,5 @@ export const ensurePdfWorker = (): void => {
 		return
 	}
 	configured = true
-	setWorkerPath(pdfWorkerUrl)
+	void ensureWorkerReady()
 }