chore: align balance change reason for tracing

for more info, https://github.com/ethereum/go-ethereum/blob/v1.16.2/core/evm.go#L143

Author: mmsqe

precompiles/common/balance_handler.go

@@ -74,7 +74,7 @@ func (bh *BalanceHandler) AfterBalanceChange(ctx sdk.Context, stateDB *statedb.S
 				return fmt.Errorf("failed to parse amount from event %q: %w", banktypes.EventTypeCoinSpent, err)
 			}
 
-			stateDB.SubBalance(common.BytesToAddress(spenderAddr.Bytes()), amount, tracing.BalanceChangeUnspecified)
+			stateDB.SubBalance(common.BytesToAddress(spenderAddr.Bytes()), amount, tracing.BalanceChangeTransfer)
 
 		case banktypes.EventTypeCoinReceived:
 			receiverAddr, err := ParseAddress(event, banktypes.AttributeKeyReceiver)
@@ -91,7 +91,7 @@ func (bh *BalanceHandler) AfterBalanceChange(ctx sdk.Context, stateDB *statedb.S
 				return fmt.Errorf("failed to parse amount from event %q: %w", banktypes.EventTypeCoinReceived, err)
 			}
 
-			stateDB.AddBalance(common.BytesToAddress(receiverAddr.Bytes()), amount, tracing.BalanceChangeUnspecified)
+			stateDB.AddBalance(common.BytesToAddress(receiverAddr.Bytes()), amount, tracing.BalanceChangeTransfer)
 
 		case precisebanktypes.EventTypeFractionalBalanceChange:
 			addr, err := ParseAddress(event, precisebanktypes.AttributeKeyAddress)
@@ -114,9 +114,9 @@ func (bh *BalanceHandler) AfterBalanceChange(ctx sdk.Context, stateDB *statedb.S
 			}
 
 			if delta.Sign() == 1 {
-				stateDB.AddBalance(common.BytesToAddress(addr.Bytes()), deltaAbs, tracing.BalanceChangeUnspecified)
+				stateDB.AddBalance(common.BytesToAddress(addr.Bytes()), deltaAbs, tracing.BalanceChangeTransfer)
 			} else if delta.Sign() == -1 {
-				stateDB.SubBalance(common.BytesToAddress(addr.Bytes()), deltaAbs, tracing.BalanceChangeUnspecified)
+				stateDB.SubBalance(common.BytesToAddress(addr.Bytes()), deltaAbs, tracing.BalanceChangeTransfer)
 			}
 
 		default: