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/walletsweep.go

@@ -165,8 +165,8 @@ type DeliveryAddr struct {
 // output, as specified by the change address. The sweep transaction will be
 // crafted with the target fee rate, and will use the utxoSource and
 // outpointLocker as sources for wallet funds.
-func CraftSweepAllTx(feeRate chainfee.SatPerKWeight, dustLimit btcutil.Amount,
-	blockHeight uint32, deliveryAddrs []DeliveryAddr, changeAddr btcutil.Address,
+func CraftSweepAllTx(feeRate chainfee.SatPerKWeight, blockHeight uint32,
+	deliveryAddrs []DeliveryAddr, changeAddr btcutil.Address,
 	coinSelectLocker CoinSelectionLocker, utxoSource UtxoSource,
 	outpointLocker OutpointLocker, feeEstimator chainfee.Estimator,
 	signer input.Signer, minConfs int32) (*WalletSweepPackage, error) {
@@ -302,7 +302,7 @@ func CraftSweepAllTx(feeRate chainfee.SatPerKWeight, dustLimit btcutil.Amount,
 	// respects our fee preference and targets all the UTXOs of the wallet.
 	sweepTx, err := createSweepTx(
 		inputsToSweep, txOuts, changePkScript, blockHeight, feeRate,
-		dustLimit, signer,
+		signer,
 	)
 	if err != nil {
 		unlockOutputs()