Parenthesized custom error in require statement throws bad_cast exception

Parenthesizing a custom error like below leads to a `std::bad_cast` exception being thrown.

```
pragma solidity >=0.0.0;
contract C {
error E();
function f() external pure { require(false, (E())); }
}
```

Start by reproducing the reported `std::bad_cast` with the Solidity snippet in the issue, then trace how the compiler handles `require` with a parenthesized custom error argument. Identify the relevant compiler tests for custom errors and add a regression case showing the example compiles or reports the expected behavior without throwing. No file or test path is named in the issue.

Written by the indexing model from the issue text.