Reload channelmanager with channel data from monitors #21105

Job	Run time
ext-test	5m 50s
build (self-hosted, beta)	1h 21m 2s
build (self-hosted, stable)	1h 21m 5s
build (self-hosted, 1.75.0)	1h 25m 22s
benchmark	16m 59s
check_docs	3m 45s
build (windows-latest, stable)	2h 28m 34s
build (macos-latest, 1.75.0)	6h 0m 19s
build (macos-latest, stable)	1h 34m 38s
check_release	3m 8s
build-tx-sync (ubuntu-latest, beta)	4m 40s
build-tx-sync (ubuntu-latest, stable)	5m 13s
build-tx-sync (macos-latest, beta)	8m 56s
build-tx-sync (ubuntu-latest, 1.75.0)	5m 20s
build-tx-sync (macos-latest, stable)	7m 15s
fuzz	1h 5m 45s
build-tx-sync (macos-latest, 1.75.0)	10m 32s
linting	2m 17s
rustfmt	14s
coverage	36m 36s
	17h 7m 30s

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