wasm: default function value of false is returned (topdown differs)

[srenatus]

With t.rego as

package p

default q(x) = false

notice:

$ opa eval -t rego -d t.rego 'data.p.q(1)' --format=pretty
undefined
$ opa eval -t wasm -d t.rego 'data.p.q(1)' --format=pretty
false

It's not relevant if there is a proper function rule body defined for q.

[srenatus]

Duplicate: Rego should behave like wasm, #2445.