Merge bitcoin/bitcoin#30765: refactor: Allow `CScript`'s `operator<<`… #62

Job	Run time
test each commit	0s
macOS 14 native, arm64, no depends, sqlite only, gui	24m 41s
ASan + LSan + UBSan + integer, no depends, USDT	1h 16m 0s
Win64 native, VS 2022	1h 16m 7s
	2h 56m 48s

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