Test

Fix dotplot vcenter=0 ignored due to falsy check #254

Job	Run time
get-environments	10s
hatch-test.py3.14-stable	3m 43s
hatch-test.py3.11-stable	4m 11s
hatch-test.py3.14-pre (PRE-RELEASE DEPENDENCIES)	9m 15s
Tests pass in all hatch environments	5s
	17m 24s

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