core/vm: Rename SHA3 instruction to KECCAK256 (#23976)

This was proposed in 2016, Solidity uses this since 2017, and evmone and other VMs use the keccak256 name. This brings geth in line with those.

core/vm/opcodes.go

@@ -70,7 +70,7 @@ const (
 	SHR    OpCode = 0x1c
 	SAR    OpCode = 0x1d
 
-	SHA3 OpCode = 0x20
+	KECCAK256 OpCode = 0x20
 )
 
 // 0x30 range - closure state.
@@ -254,7 +254,7 @@ var opCodeToString = map[OpCode]string{
 	MULMOD: "MULMOD",
 
 	// 0x20 range - crypto.
-	SHA3: "SHA3",
+	KECCAK256: "KECCAK256",
 
 	// 0x30 range - closure state.
 	ADDRESS:        "ADDRESS",
@@ -422,7 +422,7 @@ var stringToOp = map[string]OpCode{
 	"SAR":            SAR,
 	"ADDMOD":         ADDMOD,
 	"MULMOD":         MULMOD,
-	"SHA3":           SHA3,
+	"KECCAK256":      KECCAK256,
 	"ADDRESS":        ADDRESS,
 	"BALANCE":        BALANCE,
 	"ORIGIN":         ORIGIN,