Display only `user` when not in a remote shell and `user@hostname` when
connected.
Display the content in bold when running with privileges (no SSH & SSH).
Have those three always the furthest right in the `RPROMPT`. Also
reorder them to be in this order (up -> down : left -> right):
- background_jobs
- command_execution_time
- status
I wanted to have them standalone in a commit once for better
transparency instead of reapplying them before committing the updated
theme in the last commit:
529c41abcf ("zsh:p10k: Reset to `p10k configure`")
