Pull request #1727: PIPE-2894 always display channel axis to sparse profile map
Merge in PIPE/pipeline from PIPE-2894-hsd_baseline-add-channel-axis-to-the-top-panel-of-sparse-profile-map to main
* commit '3a599a4f0e1e027e7f556d83ea70f672836bf335':
move channel axis label upward slightly
added note to docstring for add_channel_axis PIPE-2894 always display channel axis to sparse profile map