fix(asyncReader): use legacy worker build for browser compatibility

The standard pdfjs-dist worker build uses Uint8Array.prototype.toHex
natively, which requires Chrome 128+ and Firefox 132+. The legacy build
includes a polyfill for this method, making it compatible with the
browser targets declared in the project (Chrome 116+, Firefox ESR).

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

Author: vitormattos

src/utils/asyncReader.ts

@@ -24,7 +24,7 @@ function loadPdfjs() {
 
 function loadWorkerUrl() {
   if (!workerUrlPromise) {
-    workerUrlPromise = import('pdfjs-dist/build/pdf.worker.min.mjs?url').then(
+    workerUrlPromise = import('pdfjs-dist/legacy/build/pdf.worker.min.mjs?url').then(
       (mod) => mod.default as string
     )
   }