dynamic ticking (#5588) should avoid (if possible) single ticks #5784
Description
There's only one xtick left in statistics/violinplot_demo.py after #5588 got merged:
Compare with before the patch:
The old xticks were perhaps a bit cramped but there's clearly room for, say, two more xticks in the new output.
(On the other hand, this helped me catch a bug in offset text calculation logic when there's a single tick, so it's not all that bad...)