Fix last_name edge cases with Solady library #2273

Job	Run time
tests (ubuntu-latest, unit, 3.8)	1m 4s
tests (ubuntu-latest, unit, 3.8)	59s
tests (ubuntu-latest, unit, 3.12)	47s
tests (ubuntu-latest, unit, 3.12)	47s
tests (ubuntu-latest, integration, 3.8)	3m 3s
tests (ubuntu-latest, integration, 3.8)	3m 3s
tests (ubuntu-latest, integration, 3.12)	3m 12s
tests (ubuntu-latest, integration, 3.12)	3m 12s
tests (ubuntu-latest, tool, 3.8)	1m 3s
tests (ubuntu-latest, tool, 3.8)	1m 3s
tests (ubuntu-latest, tool, 3.12)	47s
tests (ubuntu-latest, tool, 3.12)	47s
tests (windows-2022, unit, 3.8)	2m 54s
tests (windows-2022, unit, 3.8)	2m 54s
tests (windows-2022, unit, 3.12)	1m 26s
tests (windows-2022, unit, 3.12)	1m 26s
tests (windows-2022, integration, 3.8)	3m 33s
tests (windows-2022, integration, 3.8)	3m 33s
tests (windows-2022, integration, 3.12)	2m 46s
tests (windows-2022, integration, 3.12)	2m 46s
tests (windows-2022, tool, 3.8)	3m 5s
tests (windows-2022, tool, 3.8)	3m 5s
tests (windows-2022, tool, 3.12)	3m 0s
tests (windows-2022, tool, 3.12)	3m 0s
coverage	0s
coverage	40s
	53m 55s

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