Fix boolean logic error in hierarchy support detection #1716

Job	Run time
prepare-environment / prepare	4s
Detect which file has changed	4s
yaml-lint	0s
python-lint	14s
uv-lock-check	0s
markdown-lint	0s
action-lint	0s
validate-generated-documentation	33s
integration-tests-latest-infrahub	9m 58s
validate-documentation-style	9s
unit-tests (3.12)	2m 0s
unit-tests (3.10)	1m 39s
unit-tests (3.11)	1m 36s
unit-tests (3.13)	2m 38s
unit-tests (3.14)	2m 23s
documentation	0s
	21m 18s

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