Strange autofix for PYI025 if `"Set"` is included in `__all__`

The following snippet correctly causes Ruff to emit PYI025:

```py
from collections.abc import Set as Set

__all__ = ["Set"]
```

But if you apply the autofix, it "fixes" it to this, which is... not correct:

```py
from collections.abc import Set as AbstractSet

AbstractSet = ["Set"]
```
