Resolve forwarded HTLC claims via `MonitorEvent`s #23226

Job	Run time
check_docs	6m 38s
fuzz	1h 2m 55s
fuzz_sanity	13m 10s
benchmark	18m 11s
ext-test	6m 59s
check_release	2m 54s
rustfmt	13s
tor-connect	7m 40s
linting	2m 37s
build-nostd / build (self-hosted, 1.75.0)	16m 45s
build-sync / build (self-hosted, 1.75.0)	27m 56s
build-workspace / build (self-hosted, 1.75.0)	14m 18s
build-bindings / build (self-hosted, 1.75.0)	20m 6s
build-features / build (self-hosted, 1.75.0)	41m 23s
build-cfg-flags / build (self-hosted, 1.75.0)	18m 57s
coverage	22m 47s
notify-failure	0s
	4h 43m 29s

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