multi: replace DefaultDustLimit with script-specific DustLimitForSize

This commit updates call-sites to use the proper dust limits for
various script types. This also updates the default dust limit used
in the funding flow to be 354 satoshis instead of 573 satoshis.

sweep/sweeper.go

@@ -1150,7 +1150,7 @@ func (s *UtxoSweeper) getInputLists(cluster inputCluster,
 	if len(retryInputs) > 0 {
 		var err error
 		allSets, err = generateInputPartitionings(
-			append(retryInputs, newInputs...), s.relayFeeRate,
+			append(retryInputs, newInputs...),
 			cluster.sweepFeeRate, s.cfg.MaxInputsPerTx,
 			s.cfg.Wallet,
 		)
@@ -1161,8 +1161,8 @@ func (s *UtxoSweeper) getInputLists(cluster inputCluster,
 
 	// Create sets for just the new inputs.
 	newSets, err := generateInputPartitionings(
-		newInputs, s.relayFeeRate, cluster.sweepFeeRate,
-		s.cfg.MaxInputsPerTx, s.cfg.Wallet,
+		newInputs, cluster.sweepFeeRate, s.cfg.MaxInputsPerTx,
+		s.cfg.Wallet,
 	)
 	if err != nil {
 		return nil, fmt.Errorf("input partitionings: %v", err)
@@ -1193,7 +1193,7 @@ func (s *UtxoSweeper) sweep(inputs inputSet, feeRate chainfee.SatPerKWeight,
 	// Create sweep tx.
 	tx, err := createSweepTx(
 		inputs, nil, s.currentOutputScript, uint32(currentHeight),
-		feeRate, dustLimit(s.relayFeeRate), s.cfg.Signer,
+		feeRate, s.cfg.Signer,
 	)
 	if err != nil {
 		return fmt.Errorf("create sweep tx: %v", err)
@@ -1488,7 +1488,7 @@ func (s *UtxoSweeper) CreateSweepTx(inputs []input.Input, feePref FeePreference,
 
 	return createSweepTx(
 		inputs, nil, pkScript, currentBlockHeight, feePerKw,
-		dustLimit(s.relayFeeRate), s.cfg.Signer,
+		s.cfg.Signer,
 	)
 }