Set quality property in product configuration

When httpWebWorkerExtensionHostIframe.html is fetched it uses the web
endpoint template (in which we do not include the commit) but if the
quality is not set it prepends the commit to the web endpoint instead.
The new static endpoint does not use/handle commits so this 404s.

Long-term we might want to make the new static endpoint use commits like
the old one but we will also need to update the various other static
URLs to include the commit.

For now I just fixed this by adding the quality since:
  1. Probably faster than trying to find and update all static uses.
  2. VS Code probably expects it anyway.
  3. Gives us better control over the endpoint.

Author: code-asher

ci/build/build-release.sh

@@ -90,6 +90,7 @@ bundle_vscode() {
   {
     "enableTelemetry": true,
     "commit": "$(git rev-parse HEAD)",
+    "quality": "stable",
     "date": $(jq -n 'now | todate')
   }
 EOF