Apply PR #23846: Themes aagain #1583

Job	Run time
compute-hash (aarch64-darwin, macos-latest)	16m 27s
compute-hash (x86_64-linux, blacksmith-4vcpu-ubuntu-2404)	1m 26s
compute-hash (aarch64-linux, blacksmith-4vcpu-ubuntu-2404-arm)	3m 28s
compute-hash (x86_64-darwin, macos-15-intel)	27m 38s
update-hashes	0s
	48m 59s

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