Uris not retrieved correctly when a UriPattern with same prefix as Uris are added to UriMappers

[ajay-gov]

Add a Uri with a path, say "/a/x" to the UriMapper. Update the UriMapper with a UriPattern with the same prefixed as the Uri, say "/a/:b/c/:d".
mapper.get("/a/x") and mapper.get("/a/b/c/d") work. mapper.get("/a/x/c/d") returns a null value when it should match the UriPattern /a/:b/c/:d