Fix incorrect use of testAction helper
What does this MR do and why?
The testAction helper from
spec/frontend/__helpers__/vuex_action_helper.js no longer accepts a
callback as a 6th argument, see
!85532 (merged)
Related to #439963
The testAction helper from
spec/frontend/__helpers__/vuex_action_helper.js no longer accepts a
callback as a 6th argument, see
!85532 (merged)
Related to #439963