Fix build when devel/rapidjson is installed

devel/leatherman include an old version of RapidJSON that is not compatible
with what devel/rapidjson install. Reorder includes so that the version
included with devel/leatherman is found before the one of devel/rapidjson
because it is what is wanted.

While here, fix make test.

No need to bump PORTREVISION.

PR: 233426
Reported by: vladislav.movchan@gmail.com