psbt: fix channel funding address for simple taproot channels #11326

Job	Run time
RPC and mobile compilation check	2m 19s
check commits	2m 12s
cross compilation	17m 7s
sample configuration check	49s
lint code	6m 58s
Sqlc check	25s
check pinned dependencies (google.golang.org/grpc v1.53.0)	5s
check pinned dependencies (github.com/golang/protobuf v1.5.2)	3s
run ubuntu itests (btcd, backend=btcd)	47m 54s
run ubuntu itests (bitcoind, backend=bitcoind)	1h 1m 18s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	1h 4m 34s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling")	1h 0m 28s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	1h 16m 30s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1h 58m 10s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	1h 7m 32s
run ubuntu itests (neutrino, backend=neutrino)	57m 30s
run unit tests (btcd unit-cover)	18m 12s
run unit tests (unit tags="kvdb_etcd")	19m 1s
run unit tests (unit tags="kvdb_postgres")	16m 36s
run unit tests (unit tags="kvdb_sqlite")	12m 41s
run unit tests (btcd unit-race)	40m 31s
check release notes updated	0s
run windows itest	7m 17s
	11h 38m 12s

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