topdown: Fix resolver call to handle ref suffixes
topdown: Fix resolver call to handle ref suffixes

This commit fixes the resolver call to only provide the entrypoint ref
and then correctly handle the result of the .Find() call on the
result (an error simply indicates the path could not be found and
should not cause an error.)

Signed-off-by: Torin Sandall <933af5bec0bc58056526d55ca6c7b45fcf14cc48@gmail.com>

open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa