refactor: use maps.Copy for cleaner map handling (ethersphere#5168)

Signed-off-by: jishudashu <979260390@qq.com>

Author: jishudashu

pkg/accounting/accounting.go

@@ -10,6 +10,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"maps"
 	"math/big"
 	"strings"
 	"sync"
@@ -721,9 +722,7 @@ func (a *Accounting) PeerAccounting() (map[string]PeerInfo, error) {
 
 	a.accountingPeersMu.Lock()
 	accountingPeersList := make(map[string]*accountingPeer)
-	for peer, accountingPeer := range a.accountingPeers {
-		accountingPeersList[peer] = accountingPeer
-	}
+	maps.Copy(accountingPeersList, a.accountingPeers)
 	a.accountingPeersMu.Unlock()
 
 	for peer, accountingPeer := range accountingPeersList {

pkg/transaction/backendsimulation/backend.go

@@ -7,6 +7,7 @@ package backendsimulation
 import (
 	"context"
 	"errors"
+	"maps"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum"
@@ -74,15 +75,11 @@ func (m *simulatedBackend) advanceBlock() {
 	m.blockNumber = block.Number
 
 	if block.Receipts != nil {
-		for hash, receipt := range block.Receipts {
-			m.receipts[hash] = receipt
-		}
+		maps.Copy(m.receipts, block.Receipts)
 	}
 
 	if block.NoncesAt != nil {
-		for addr, nonce := range block.NoncesAt {
-			m.noncesAt[addr] = nonce
-		}
+		maps.Copy(m.noncesAt, block.NoncesAt)
 	}
 }