`EXP52-CPP`: Exclude uses of operators with unevaluated operands in already unevaluated contexts

### Affected rules
 - `EXP52-CPP`

### Description

Exclude uses of operators with unevaluated operands where they are already in unevaluated contexts, as the scope for confusion is less.

### Example

```cpp
template<typename T>
void foo(T t) noexcept(noexcept(some_function(t))) {
  some_function(t);
}
```
