`<TypedDict> |= {}` fails with `unsupported-operator`

https://play.ty.dev/3c2f6220-f3ad-48ed-b960-d80d9d611de2

```python
from typing_extensions import TypedDict

class ModelSettings(TypedDict):
    pass

base = ModelSettings()
overrides = ModelSettings()
base |= overrides # ok
base |= {} # error
```

Briefly discussed in the [dev channel](https://discord.com/channels/1039017663004942429/1343690517745111081/1450991812138369168)