MapFallbackTo* APIs are extremely inefficient

MapFallbackTo* (Controller, Page etc) APIs add a catch all route with a nonfile route constraint, but it also adds dynamic controller/page metadata, which allows it to match pages or controllers dynamically. The net effect of this is that all nodes in the DFA tree end executing any MatcherPolicy that contains dynamic page/controller metadata and in turn this causes all policies that affect pages or controllers to apply to *all* nodes in the graph.