Redirects to root/home page should have 404 effective_status

[Mr0grog]

This is the DB twin of this issue in the task sheets: edgi-govdata-archiving/web-monitoring-task-sheets#15

Non-root path URLs that redirect to the root path (of the same host) should be return 404 for Version#effective_status.

This DOT page makes for a nice example: https://monitoring.envirodatagov.org/page/8b6cbc6d-ee2b-45af-8f8c-c005d997e800/cb7d6c49-f3db-45ec-b046-304b450d04c2..daf1d7c7-7739-491c-b346-b67de202af20