add test to tickle brittle reflection-y part of Goals Reference generation

adding 'goal builddict' to ci.sh was great. this here test hopes to be a lightweight way to test a reflection-y part of the code.

Testing Done:
ran test. it passed.

temporarily tweaked Phase.setup->phase.setup in src/.../builddict.py; test failed.

Reviewed at https://rbcommons.com/s/twitter/r/876/