refactor: pull printing::type::detail::prettify_identifier out of det… #920

Job	Run time
generate-base-matrix	1s
Linux clang-19 /libc++ (C++20, Debug, 64bit)	24m 39s
Linux clang-19 (C++20, Debug, 64bit)	26m 47s
Linux clang-18 /libc++ (C++20, Debug, 64bit)	26m 32s
Linux clang-18 (C++20, Debug, 64bit)	24m 26s
Linux clang-17 /libc++ (C++20, Debug, 64bit)	26m 30s
Linux clang-17 (C++20, Debug, 64bit)	24m 10s
Linux clang-16 /libc++ (C++20, Debug, 64bit)	15m 12s
Linux clang-16 (C++20, Debug, 64bit)	13m 49s
Linux gcc-14 (C++20, Debug, 64bit)	38m 56s
Linux gcc-13 (C++20, Debug, 64bit)	38m 9s
Linux gcc-12 (C++20, Debug, 64bit)	35m 14s
Windows 2022 msvc-v143 (C++20, Debug, 64bit)	24m 42s
Windows 2022 msvc-v143 /Gv (C++20, Debug, 64bit)	21m 48s
Windows 2022 msvc-ClangCl (C++20, Debug, 64bit)	25m 0s
macOS AppleClang-18 (C++20, Debug, 64bit)	25m 54s
macOS AppleClang-17 (C++20, Debug, 64bit)	24m 12s
macOS AppleClang-16 (C++20, Debug, 64bit)	15m 13s
	7h 11m 14s

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