-e: when you use a package located outside of your local unity project on in a scoped package registry the WebGL build will fail

-repro:
--extract attached archive and open the project with latest Unity
--start a WebGL build
--NOTICE it fails with errors
--copy the package folder from the root of the extracted folder into UnityProject/Packages#
--remove the external linking in the manifest.json file
--start a WebGL build
--NOTICE it finishes the build and works

-additional notes:
--this already fails using with alpha 17 when the incremental pipeline was introduced
--the build failing behaviour can be seen when using a scoped registry to include a packages such as https://openupm.com/packages/com.atteneder.draco/?subPage=readme