Removed unnused size_t for to_string in 32b compiles #156

Job	Run time
build-clang-linux (ubuntu:24.04, static)	2m 5s
build-clang-linux (ubuntu:24.04, dynamic)	3m 58s
build-clang-linux (ubuntu:22.04, dynamic)	4m 19s
build-clang-linux (ubuntu:22.04, static)	2m 26s
	12m 48s

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