tapchannel: enforce strict forwarding for asset invoices #3248

Job	Run time
Format check	2m 52s
Compilation check	4m 13s
cross compilation	9m 59s
Docker build check	3m 22s
run itests	12m 7s
run itests postgres	19m 49s
Lint check	2m 39s
migration version check	15s
RPC check	1m 10s
go mod check	3m 4s
run LiT tests	11m 15s
sample configuration check	43s
test vector check	1m 0s
Sqlc check	2m 43s
run unit tests (unit-race)	6m 45s
run unit tests (unit-cover)	3m 45s
run unit tests (unit dbbackend=postgres)	5m 5s
finish	5s
	1h 30m 51s

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