Fix: owner_manages_runners_spec taking 80 minutes

Summary

The Developer Experience (DevEx) team is working on improving pipeline stability EPIC and has identified a recurring failure due to owner_manages_runners_spec.rb That's causing significant job timeouts.

Problem Description

The spec file spec/features/groups/runners/owner_manages_runners_spec.rb is expected to take a few minutes to run, takes more than 80 + minutes before job timing out.

Error Details

Here is the error message

Click to view Error logs

Finished in 85 minutes 56 seconds (files took 1 minute 27.03 seconds to load)
179 examples, 3 failures
Failed examples:
rspec './spec/features/groups/runners/owner_manages_runners_spec.rb[1:2:1:1]' # Group manages runners in runner list with an online project runner behaves like pauses, resumes and deletes a runner pauses and resumes runner
rspec './spec/features/groups/runners/owner_manages_runners_spec.rb[1:2:1:2:1]' # Group manages runners in runner list with an online project runner behaves like pauses, resumes and deletes a runner deletes runner confirms runner deletion
rspec './spec/features/groups/runners/owner_manages_runners_spec.rb[1:2:1:2:2]' # Group manages runners in runner list with an online project runner behaves like pauses, resumes and deletes a runner deletes runner cancels runner deletion

Technical Notes

We've found that stray PreventCrossDatabaseModification seem to be the cause for the jobs timing out. We should a) prevent the time out b) prevent the PreventCrossDatabaseModification error from happening in the first place.

This issue will aim to address a), while b) has been reported at #499051 and can be addressed separately.