enhance type-prettification #926

Job	Run time
generate-base-matrix	2s
Linux gcc-13 (C++20, Debug, 64bit)	41m 36s
Linux gcc-12 (C++20, Debug, 64bit)	38m 2s
Linux gcc-14 (C++20, Debug, 64bit)	41m 36s
Linux clang-18 (C++20, Debug, 64bit)	25m 24s
Linux clang-18 /libc++ (C++20, Debug, 64bit)	29m 45s
Linux clang-16 (C++20, Debug, 64bit)	14m 39s
Linux clang-17 /libc++ (C++20, Debug, 64bit)	27m 55s
Linux clang-17 (C++20, Debug, 64bit)	24m 45s
Windows 2022 msvc-v143 (C++20, Debug, 64bit)	31m 4s
Linux clang-16 /libc++ (C++20, Debug, 64bit)	16m 31s
Linux clang-19 /libc++ (C++20, Debug, 64bit)	26m 59s
Linux clang-19 (C++20, Debug, 64bit)	24m 56s
Windows 2022 msvc-v143 /Gv (C++20, Debug, 64bit)	30m 52s
macOS AppleClang-17 (C++20, Debug, 64bit)	24m 30s
Windows 2022 msvc-ClangCl (C++20, Debug, 64bit)	31m 27s
macOS AppleClang-16 (C++20, Debug, 64bit)	21m 40s
macOS AppleClang-18 (C++20, Debug, 64bit)	23m 14s
	7h 54m 57s

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