fix: Pass callvalue() to callcode

tests/e2e-evm/contracts/ABI_BasicTests.sol

@@ -49,14 +49,14 @@ contract Caller {
  let result := callcode(
  gas(), // gas
  to, // to address
- 0, // value
+ callvalue(), // value
  0, // in - pointer to start of input, 0 since we copied the data to 0
  data.length, // insize - size of the input
  0, // out
  0 // outsize - 0 since we don't know the size of the output
  )
 
- // Copy the returned data.
+ // Copy the returned data to memory.
  // returndatacopy(t, f, s)
  // - t: target location in memory
  // - f: source location in return data

tests/e2e-evm/test/callcode.test.ts

@@ -150,15 +150,16 @@ describe("CallCode", () => {
  ],
  }),
  }),
- // msg.sender is the caller contract, and value is NOT passed
+ // msg.sender is the caller contract
  wantSender: (ctx) => ctx.lowLevelCaller.address,
+ // msg.value is not preserved
  wantValue: 0n,
  },
  {
  name: "callcode with storage",
  txParams: (ctx) => ({
  to: ctx.lowLevelCaller.address,
- value: 100n,
+ value: 0n,
  gas: contractCallerGas + 20_000n,
  data: encodeFunctionData({
  abi: lowLevelCaller.abi,