Add funding redeem script to `ChannelDetails` and `ChannelPending` event #21075

Job	Run time
ext-test	5m 34s
build (windows-latest, stable)	2h 21m 0s
build (self-hosted, 1.75.0)	1h 41m 58s
build (self-hosted, beta)	1h 20m 58s
build-tx-sync (ubuntu-latest, stable)	4m 33s
benchmark	16m 49s
build (macos-latest, 1.75.0)	2h 6m 38s
build (self-hosted, stable)	1h 21m 21s
check_release	2m 49s
build-tx-sync (ubuntu-latest, 1.75.0)	5m 15s
build-tx-sync (macos-latest, beta)	8m 27s
build-tx-sync (macos-latest, stable)	7m 44s
build (macos-latest, stable)	2h 13m 59s
build-tx-sync (macos-latest, 1.75.0)	5m 18s
fuzz	1h 12m 46s
build-tx-sync (ubuntu-latest, beta)	4m 33s
linting	2m 34s
rustfmt	16s
check_docs	4m 3s
coverage	40m 22s
	14h 6m 57s

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