[lldb] no children in the `Class` class

To reproduce debug the program in Xcode 26.2

```c++
class Class {
public:
int x;
};

class Class1 {
public:
int x;
};

int main() {
Class sample{1};
Class1 sample1{1};

return 0; // breakpoint
}
```

Expected: `sample` has the `x` child.

Actual: `sample` has no children:

Reproduce the issue in Xcode 26.2 using the C++ program in the report and stop at the marked breakpoint. Compare the debugger children shown for sample and sample1; done means sample exposes its x child as expected.

Written by the indexing model from the issue text.