Unify behaviour of 'Copy commit SHA to clipboard' on job view

Closes #58343

See merge request gitlab-org/gitlab-ce!25829

This commit updates the job detail view sidebar to accommodate new
states introduced as part of the post-merge pipeline feature.

In jobs store, moves the check for
`shouldRenderSharedRunnerLimitWarning` to the CE
codebase.

* Remove headerAction getter from job getters
* Remove prop from being passed into header_ci_component
* Remove no longer needed tests

* Move cancel button to where the Retry is normally placed
* Move new issue button to be in sidebar view for desktop versions
* Update specs

Add changelog entry for moving cancel btn

Remove mobile version job action buttons

* Remove buttons showing up on seperate row on job sidebar
* Show Retry button in mobile version next to build name

Improve flexbox usage for job action buttons

* Allow for cleaner scaling of job name and alignment of buttons

Adjust the debug button icon size

* Adjust debug icon size on the build sidebar so the debug button is the
same height as the other buttons

Tweak job name vertical margins

* Changes are only made to job side vue
* Remove old class that only changed margin on top
* Adjust veritcal margin uniformy set to 0 via bootstrap margin class

Update Karma tests for job side view

* Update karms tests for mobile version of side view
* Removed tests for new issue button since we are fixing in
https://gitlab.com/gitlab-org/gitlab-ce/issues/55944

Fix rspec and static-analysis failures

* Run Prettier
* Update rspec css selectors

Move job action buttons to new line

* Move "New Issue" and "Debug" buttons to seperate line in job sidebar
* Update specs

Run Prettier to format JS

Remove New Issue button from job header

Make sure button spacing follows styleguide

This commit fixes a number of minor style issues in the job details
sidebar - spacing, font weights, button sizes, and font sizes.

More details here:
https://gitlab.com/gitlab-org/gitlab-ce/issues/54814