Rename registerConstructor to registerType using StringConstructable … #1977

Job	Run time
Build (Ubuntu GCC, ubuntu-latest, gcc, g++)	21m 2s
Build (Ubuntu Clang, ubuntu-latest, clang, clang++)	21m 36s
Build (macOS GCC, macOS-13, gcc, g++)	22m 14s
Build (macOS Clang, macOS-13, clang, clang++)	22m 49s
Build (Windows GCC, windows-latest, gcc, g++)	21m 35s
Build (Windows Clang, windows-latest, clang, clang++)	22m 36s
Build (Windows MSVC, windows-latest, msvc, msvc)	22m 13s
	2h 34m 5s

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