Routing is broken on UCM builds

[hojberg]

Routing doesn’t work on UCM builds of the UI. This seems related to the base path and results in definitions being un-openable.

Its likely that this bug has existed since the router was changed to be the more raw parser, but was masked by the fact that definitions are fetched regardless of what the URL is.

This hasn’t changed recently, but what has is that the URL will determine which page is shown. So even though the definition is actually fetched, the routing breaks and the empty state is shown (it thinks the Route is Perspective when it should be Definition)