Detect array argument for path in object.get (v0.37.0)

[anderseknert]

While this function was improved (by no one less than @charlieegan3!) in v0.37.0, we don't set mcov based on this. If we can identify an array passed as the path argument, we should.

[charlieegan3]

That was a fun one! 😄 open-policy-agent/opa#4166 (comment)