Regenerate left/top/bottom and stacked colorbar baselines (#687)

The decoration-clearance fix updates only the genuinely-affected colorbars: the
per-side locations (img top/left/bottom, all-sides, different-sides), stacked
multiple-images-in-one-cs, and a few colorbar-bearing image/label baselines.
Right-side single colorbars are unchanged. Generated from the py3.11-stable CI
artifact.

Author: timtreis