ConstantsScraper: Using `--with-type` with a constant that has a shift produces bad code

Given a constant that is calculated with a shift:

```cpp
#define MY_CONST (1<<4)
```

Then trying to use `--with-type` with this constant (e.g., `--with-type=MY_CONST=ushort`), constants scraper will produce the following code:

```csharp
public const ushort MY_CONST = 1u<<4;
```

Which is invalid:

```
error CS0266: Cannot implicitly convert type 'uint' to 'ushort'. An explicit conversion exists (are you missing a cast?)
```

Start at the constants scraper path handling the `--with-type` option and reproduce the issue with `#define MY_CONST (1<<4)` and `--with-type=MY_CONST=ushort`. Inspect the generated C# declaration and verify that the resulting code compiles without the uint-to-ushort error.

Written by the indexing model from the issue text.