tapchannel: use taproot overlay chan type for asset chans #2845

Job	Run time
Format check	1m 6s
cross compilation	11m 29s
Compilation check	2m 8s
Docker build check	3m 6s
run itests	8m 51s
Lint check	3m 46s
run itests postgres	15m 52s
migration version check	12s
go mod check	55s
RPC check	1m 58s
sample configuration check	2m 18s
Sqlc check	58s
run unit tests (unit-race)	6m 56s
test vector check	1m 39s
run unit tests (unit-cover)	3m 58s
run unit tests (unit dbbackend=postgres)	5m 13s
	1h 10m 25s

Provide feedback