[tree] don't modify spaceless strain names #3329

Job	Run time
mypy	53s
test (python=3.9 biopython=1.80)	13m 30s
check-docs	42s
test (python=3.9 biopython=1.82)	13m 45s
pathogen-repo-ci (dengue)	2m 42s
test (python=3.9 biopython=latest)	13m 39s
pathogen-repo-ci-v0 (avian-flu)	59s
pathogen-repo-ci (lassa)	7m 51s
test (python=3.10 biopython=1.80)	14m 23s
pyright	17s
pathogen-repo-ci-v0 (ebola)	53s
pathogen-repo-ci (measles)	1m 22s
test (python=3.10 biopython=1.82)	14m 27s
pathogen-repo-ci-v0 (mumps)	54s
pathogen-repo-ci-v0 (ncov)	1m 0s
pathogen-repo-ci (mpox)	1m 16s
pathogen-repo-ci-v0 (rsv)	8m 48s
pathogen-repo-ci (oropouche)	1m 25s
pathogen-repo-ci-v0 (seasonal-flu)	1m 15s
test (python=3.10 biopython=latest)	14m 20s
pathogen-repo-ci (rabies)	2m 24s
pathogen-repo-ci-v0 (tb)	1m 23s
test (python=3.11 biopython=1.80)	14m 22s
pathogen-repo-ci (seasonal-cov)	1m 48s
test (python=3.11 biopython=1.82)	14m 26s
pathogen-repo-ci (wnv)	1m 6s
test (python=3.11 biopython=latest)	14m 35s
pathogen-repo-ci (yellow-fever)	4m 27s
test (python=3.12 biopython=1.82)	21m 44s
pathogen-repo-ci (zika)	1m 15s
test (python=3.12 biopython=latest)	21m 35s
build-docs / build	2m 25s
codecov	11s
release	0s
rebuild-docker-image	0s
	3h 36m 2s

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