mypy issues

[aldbr]

Dear developers,

1. mypy is complaining about the KeySetSerialization type:

error: Argument 1 to "import_key_set" of "KeySet" has incompatible type "dict[Any, Any]"; expected "KeySetSerialization"  [arg-type]

I should likely import it from https://github.com/authlib/joserfc/blob/main/src/joserfc/_keys.py but this looks like a private module and KeySetSerialization does not seem to be part of the exported members:

joserfc/src/joserfc/_keys.py

Lines 12 to 20 in 7982683

	__all__ = [
	"OctKey",
	"RSAKey",
	"ECKey",
	"OKPKey",
	"Key",
	"KeySet",
	"JWKRegistry",
	]

Is that expected?

2. mypy is also complaining about the get method in https://github.com/authlib/joserfc/blob/main/src/joserfc/rfc7517/models.py when we set the default value as []:

key_ops = key.get("key_ops", [])

error: Argument 2 to "get" of "BaseKey" has incompatible type "list[Never]"; expected "str | None"  [arg-type]

It's because the expected type of default does not include list (only str or None), is that expected?

joserfc/src/joserfc/rfc7517/models.py

Line 115 in 7982683

def get(self, k: str, default: str | None = None) -> str | list[str] | None:

I can open a PR to perform the changes I am describing here if required.

Thanks

[lepture]

Fixed in main branch