fix: ignore webpack resolve unpdf for nextjs (#1320)

Co-authored-by: Marcus Schiesser <mail@marcusschiesser.de>

.changeset/rare-sheep-search.md

+---
+"llamaindex": patch
+---
+
+fix: ignore resolving unpdf for nextjs

packages/llamaindex/src/next.ts

@@ -37,6 +37,7 @@ export default function withLlamaIndex(config: any) {
     webpackConfig.resolve.alias = {
       ...webpackConfig.resolve.alias,
       "@google-cloud/vertexai": false,
+      unpdf: false,
     };
     // Following lines will fix issues with onnxruntime-node when using pnpm
     // See: https://github.com/vercel/next.js/issues/43433