Store and check channel data in channel monitors #21179

Job	Run time
ext-test	7m 41s
build (self-hosted, stable)	2h 10m 31s
build (self-hosted, beta)	2h 10m 46s
build (macos-latest, stable)	1h 49m 31s
build (self-hosted, 1.75.0)	2h 6m 44s
build (windows-latest, stable)	2h 26m 31s
benchmark	16m 51s
build-tx-sync (ubuntu-latest, beta)	4m 37s
check_docs	6m 12s
build (macos-latest, 1.75.0)	2h 6m 14s
build-tx-sync (ubuntu-latest, 1.75.0)	5m 46s
build-tx-sync (macos-latest, stable)	5m 51s
build-tx-sync (macos-latest, beta)	7m 50s
build-tx-sync (ubuntu-latest, stable)	5m 13s
rustfmt	14s
build-tx-sync (macos-latest, 1.75.0)	9m 44s
linting	2m 35s
check_release	2m 58s
fuzz	1h 15m 56s
coverage	49m 36s
	16h 11m 21s

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