Astroid Infinite loop when `__len__(self)` is mistakenly defined as `return len(self)`

### Steps to reproduce
Lint the following program with pylint
```python
class Crash:
    def __len__(self) -> int:
        return len(self)
```

### Current behavior

The following error is thrown and pylint crashes
```
RecursionError: maximum recursion depth exceeded
```

### Expected behavior

It should not crash.

### Asteroid version
2.4.0
