More const in Registry.cpp #2996

Job	Run time
Ubuntu 20.04 AppImage (x86_64)	7m 34s
Build macOS (arm64)	20m 10s
Ubuntu 20.04 AppImage (x86_64, gcc 11)	6m 25s
Source Tarball	2m 20s
Ubuntu 22.04 AppImage (x86_64)	6m 38s
Build macOS (x86_64)	24m 17s
Windows MSVC 2019 (x86)	6m 19s
Windows MSVC 2019 (x86_64)	6m 37s
Windows MSVC 2022 (x86)	6m 57s
Windows MSVC 2022 (x86_64)	6m 14s
Package macOS (x86_64, arm64, universal)	0s
	1h 33m 31s

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