polyfill support for promise.withResolvers

[sujoys12]

The current version 4 of pdfjs-dist is using Promise.withResolvers, which is not supported in older browsers. The FAQ of the pdfjs-dist repository suggests using the legacy build of the library for older browsers. You can find more information about this suggestion at https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#legacy-build.
How should this be handled in relation to react-pdf-js?