Draft: fix: Add patchFetch for ext host to work around CORS
Issue: [Bug] When `crossOriginExtensionHost` FF is tru... (gitlab-web-ide#318 - closed)
Description
This MR fixes gitlab-web-ide#318 (closed) by adding a patchFetch
so that all fetch requests in the extension host are funneled through the message port if they are within the expected URL.