Fix Vue 3 errors in three runner test suites

What does this MR do and why?

Update runner_platforms_radio_spec, group_runner_show_app_spec and runner_details_spec with relaxed expectations so the can pass in different versions of Vue.

References

• Issue to fix at #503489 (closed)
• An MR that fixed src issues with a similar pattern: !164227 (merged)

How to set up and validate locally

VUE_VERSION=3 yarn jest spec/frontend/ci/runner/components/runner_details_spec.js
VUE_VERSION=3 yarn jest spec/frontend/ci/runner/group_runner_show/group_runner_show_app_spec.js

Related to #503489 (closed)