bypass 0 amount in cctx and corrected Mumbai's chain_id

zetaclient/btc_signer.go

@@ -108,7 +108,12 @@ func (signer *BTCSigner) SignWithdrawTx(to *btcutil.AddressWitnessPubKeyHash, am
 	remaining := total - amount
 	remainingSats, err := getSatoshis(remaining)
 	if err != nil {
-		return nil, err
+		// TODO: amount validation should be done in zeta core to block invalid cctx
+		// We ignore invalid amount for now, otherwise it will block all other cctxes
+		// 'remaining' is supposed to be > 0 as we have checked total >= amount + fees
+		validSendSofar = false
+		signer.logger.Error().Err(err).Msgf("SignWithdrawTx: cannot convert remaining amount %f to satoshis", remaining)
+		//return nil, err
 	}
 	remainingSats -= fees.Int64()
 	remainingSats -= nonceMark

zetaclient/evm_client.go

@@ -408,9 +408,9 @@ func (ob *EVMChainClient) IsSendOutTxProcessed(sendHash string, nonce uint64, co
 
 // The lowest nonce we observe outTx for each chain
 var lowestOutTxNonceToObserve = map[int64]uint64{
-	5:    70000,  // Goerli
-	97:   95000,  // BSC testnet
-	8001: 120000, // Matic
+	5:     70000,  // Goerli
+	97:    95000,  // BSC testnet
+	80001: 120000, // Matic
 }
 
 // FIXME: there's a chance that a txhash in OutTxChan may not deliver when Stop() is called