prevent unnecessary `utils::as_const()` calls #19077

Job	Run time
build_make (alpine:3.23)	6m 24s
build_cmake (ubuntu:25.10, true, true)	5m 44s
build_cmake (ubuntu:24.04, true, true)	5m 59s
build_cmake (alpine:3.23, false, false)	4m 12s
build_make (ubuntu:24.04)	5m 4s
build_make (ubuntu:25.10)	5m 0s
	32m 23s

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