Vue 3 spec fix init_simple_app_helper_spec
What does this MR do and why?
Vue 3 spec fix
Use defineComponent
MR acceptance checklist
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Screenshots or screen recordings
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***NO VISUAL CHANGES***
How to set up and validate locally
Numbered steps to set up and validate the change are strongly suggested.
- Run test locally
VUE_VERSION=3 yarn jest path-to-spec - Checkout branch
- Run test locally
VUE_VERSION=3 yarn jest path-to-spec
template sourced from https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/merge_request_templates/Default.md
Related to #578012