feat: update validation for obs['in_tissue'] to include descendants of Visiium #2623

Job	Run time
unit-test-genes-dry-run	28s
lint	19s
unit-tests-cli	1m 41s
unit-test-ontology-dry-run	16s
unit-tests-migration-assistant	11s
submit-codecoverage	14s
	3m 9s

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