Merge bitcoin/bitcoin#31191: build: Make G_FUZZING constexpr, require… #3539

Job	Run time
macOS 14 native, arm64, no depends, sqlite only, gui	18m 59s
Win64 native, VS 2022	1h 0m 12s
test each commit	0s
ASan + LSan + UBSan + integer, no depends, USDT	1h 14m 34s
	2h 33m 45s

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