Defer to the namespace value set on the step, unless it is set explicitly on a given output
This fixes a regression that came in recently wherein we stopped using the step namespace and only used the namespace value set on a given output (and defaults to default if not set.) However, the precedent when using this mixin was for outputs to inherit the step namespace.
This fixes a regression that came in recently wherein we stopped using the step namespace and only used the namespace value set on a given output (and defaults to
defaultif not set.) However, the precedent when using this mixin was for outputs to inherit the step namespace.