[Interpreter] Make ForInPrepare take a kRegTriple8 and ForInNext take kRegPair8 for cache state

src/interpreter/bytecode-array-iterator.cc

Index: src/interpreter/bytecode-array-iterator.cc
diff --git a/src/interpreter/bytecode-array-iterator.cc b/src/interpreter/bytecode-array-iterator.cc
index d09d72f01a2142b600970ef88fb08b27a81abf47..7f030a7b94c002731d29deb34cecc9159b67a670 100644
--- a/src/interpreter/bytecode-array-iterator.cc
+++ b/src/interpreter/bytecode-array-iterator.cc
@@ -89,6 +89,7 @@ Register BytecodeArrayIterator::GetRegisterOperand(int operand_index) const {
       Bytecodes::GetOperandType(current_bytecode(), operand_index);
   DCHECK(operand_type == OperandType::kReg8 ||
          operand_type == OperandType::kRegPair8 ||
+         operand_type == OperandType::kRegTriple8 ||
          operand_type == OperandType::kMaybeReg8 ||
          operand_type == OperandType::kReg16);
   uint32_t operand = GetRawOperand(operand_index, operand_type);