WIP [refine] unique internal node names #2317

Job	Run time
test (python=3.8 biopython=1.80)	14m 36s
pathogen-repo-ci (avian-flu)	58s
test (python=3.8 biopython=latest)	10m 22s
pathogen-repo-ci (ebola)	1m 35s
test (python=3.9 biopython=1.80)	13m 8s
test (python=3.9 biopython=latest)	12m 36s
pathogen-repo-ci (lassa)	1m 23s
test (python=3.10 biopython=1.80)	10m 40s
pathogen-repo-ci (mumps)	3m 48s
test (python=3.10 biopython=latest)	11m 8s
pathogen-repo-ci (ncov)	1m 37s
test (python=3.11 biopython=1.80)	10m 42s
pathogen-repo-ci (rsv)	2m 56s
test (python=3.11 biopython=latest)	10m 43s
pathogen-repo-ci (seasonal-flu)	1m 40s
pathogen-repo-ci (tb)	1m 51s
build-docs / build-pip	1m 1s
build-docs / build-conda	0s
codecov	10s
	1h 50m 54s

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