lnwallet/channel: correct dust calculation on incoming HTLC

Similar to the previous commit, we fix a bug resulting in the wrong
commit weight being calculated when an HTLC just above the remote's
duslimit was added from the remote. This was a result of using the
successFee instead of the timeoutFee when checking whether it was dust,
making us consider it dust when it shouldn't have been.

lnwallet/channel.go

@@ -4031,7 +4031,7 @@ func (lc *LightningChannel) computeView(view *htlcView, remoteChain bool,
 	}
 	for _, htlc := range filteredHTLCView.theirUpdates {
 		if htlcIsDust(
-			lc.channelState.ChanType, !remoteChain, !remoteChain,
+			lc.channelState.ChanType, true, !remoteChain,
 			feePerKw, htlc.Amount.ToSatoshis(), dustLimit,
 		) {
 			continue