PEP 688: Cannot call super().__buffer__()

The following will currently fail with a RecursionError:

```
class A(bytearray):
 def __buffer__(self, flags):
 return super().__buffer__(flags)

a = A()
mv = memoryview(a)
```

Thanks to @chilaxan for finding this, along with some related problems. I am working on a fix.


### Linked PRs
* gh-104227