Fix Vue 3 admin runner tests when mounting filtered search
What does this MR do and why?
This change reduces the amount of components mounted to test the admin runner UI, making the test compatible with Vue 3.
The root cause appears to be in the filtered search component, but removing it form the can fix the test.
How to set up and validate locally
VUE_VERSION=3 yarn jest spec/frontend/ci/runner/admin_runners/admin_runners_app_spec.js
VUE_VERSION=3 yarn jest spec/frontend/ci/runner/group_runners/group_runners_app_spec.js
Related to #503489 (closed)
Edited by Miguel Rincon