Improve coverage report with experimental runs

[KevinEady]

The CI job for coverage only runs for files under the npm test command. This does not include experimental builds, therefore code coverage reported in pull requests exclude those changes.

[github-actions]

This issue is stale because it has been open many days with no activity. It will be closed soon unless the stale label is removed or a comment is made.

[github-actions]

This issue is stale because it has been open many days with no activity. It will be closed soon unless the stale label is removed or a comment is made.