Unable to export certain media network requests in HAR file

There is an issue when exporting network requests with specific file types (e.g., .webp, .pdf, etc.) to a HAR file. The problem occurs due to an encoding error, which prevents these requests from being properly included in the exported file.

Start by reproducing HAR export with network requests for .webp and .pdf files, then trace the HAR export path to find where encoding fails. Done means these media requests are included in a valid exported HAR file without encoding errors.

Written by the indexing model from the issue text.