Fix the ability for a malicious adversary to snipe ERC20s out via re-entrancy from the ERC20 contract

processor/ethereum/router/contracts/IRouter.sol

@@ -63,6 +63,8 @@ interface IRouterWithoutCollisions {
   /// @notice The call to an ERC20's `transferFrom` failed
   error TransferFromFailed();
 
+  /// @notice The code wasn't to-be-executed by self
+  error CodeNotBySelf();
   /// @notice A non-reentrant function was re-entered
   error Reentered();