message: fix(ctb): resolve compiler warning
  Resolves a small compiler warning. Nothing significant.
diff: @@ -8,12 +8,12 @@ import { Messenger_Initializer, Reverter, CallerCaller } from "./CommonTest.t.so
  contract CrossDomainMessenger_Test is Messenger_Initializer {
  // Ensure that baseGas passes for the max value of _minGasLimit,
  // this is about 4 Billion.
  - function test_baseGas() external {
  + function test_baseGas() external view {
  L1Messenger.baseGas(hex"ff", type(uint32).max);
  }
  // Fuzz for other values which might cause a revert in baseGas.
  - function testFuzz_baseGas(uint32 _minGasLimit) external {
  + function testFuzz_baseGas(uint32 _minGasLimit) external view {
  L1Messenger.baseGas(hex"ff", _minGasLimit);
  }
  }
  