Import variable is not defined but rule is still running

[NehaSachan]

//first.rego
package demo

import data.vars.limit as numeric_limit

SomeRule[result] {
x:= 100
x > numeric_limit
result := "OK"
}

//second.rego

---

package vars

//no variable defined here.

Expected Behaviour:
It should throw error that there is no data.vars.limit variable OR should fail the rule with error.

ACtual Behaviour:
Its running without any error.

[tsandall]

Closing this as it's a duplicate of #491.