Use shared JobName component in JobContainerItem

What does this MR do?

Extracts a shared JobName Vue component and uses that in JobContainerItem.

What are the relevant issue numbers?

follow-up of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/22505/diffs#note_110805287

part of https://gitlab.com/gitlab-org/gitlab-ce/issues/52135

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides