graph: move topology subscription to `ChannelGraph` #17710

Job	Run time
Sqlc check	2m 38s
check commits	1m 8s
RPC and mobile compilation check	1m 8s
cross compilation (arm, darwin-arm64 freebsd-arm linux-armv6 linux-armv7 linux-arm64 windows-arm)	1m 9s
lint code	56s
cross compilation (i386, freebsd-386 linux-386 windows-386)	1m 6s
windows itest	1s
run unit tests (unit-cover)	1m 9s
cross compilation (amd64, darwin-amd64 freebsd-amd64 linux-amd64 netbsd-amd64 openbsd-amd64 windo...	1s
macOS itest	2s
backwards compatability test	1s
run unit tests (unit tags="kvdb_sqlite")	1s
run unit tests (unit tags="kvdb_etcd")	1s
run unit tests (unit-module)	1s
itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	57s
itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling")	1s
itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	1s
itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	1s
sample configuration check	1s
itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	1s
run unit tests (unit-race)	1s
itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	1s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	1s
basic itests (bitcoind-notxindex, backend="bitcoind notxindex")	1s
run unit tests (unit tags="kvdb_postgres")	1s
basic itests (bitcoind, backend=bitcoind cover=1)	1s
basic itests (neutrino, backend=neutrino cover=1)	1s
basic itests (btcd, backend=btcd cover=1)	1s
check release notes updated	1s
check pinned dependencies (google.golang.org/grpc v1.59.0)	1s
finish	3s
	10m 37s

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