Request URL is constructed incorrectly

Problem/Motivation

The request URL is built by using ${baseUrl}${selectedEntity}/${selectedBundle}. But the actual path may be customized. For example, the Entity may be taxonomy_term and the Bundle may be categoris, but the path to the list might be customized to taxonomy/categories

Steps to reproduce

Customize the path to the API endpoint.

Proposed resolution

The proper path to the resource is listed at /jsonapi. I suspect we need to use that instead of constructing the URL from pieces in js/react-app//src/utils/urlBuilde.js