Pyright diagnostic type incompatible

[AbaoFromCUG]

@magics_class
class SimpleGPTMagics(Magics):
    api_type = Unicode("openai", help="The type of api that will be used to query the models").tag(config=True)

pyright report

Diagnostics:
1. Argument of type "Literal['openai']" cannot be assigned to parameter "default_value" of type "Sentinel" in function "__init__"
     "Literal['openai']" is incompatible with "Sentinel" [reportGeneralTypeIssues]

traitlets/traitlets/traitlets.py

Lines 479 to 497 in 05d6ecb

	class TraitType(BaseDescriptor):
	"""A base class for all trait types."""
	metadata: t.Dict[str, t.Any] = {}
	allow_none = False
	read_only = False
	info_text = "any value"
	default_value: t.Optional[t.Any] = Undefined
	def __init__(
	self,
	default_value=Undefined,
	allow_none=False,
	read_only=None,
	help=None,
	config=None,
	**kwargs,
	):
	"""Declare a traitlet.

traitlets/traitlets/traitlets.py

Lines 135 to 141 in 05d6ecb

	Undefined = Sentinel(
	"Undefined",
	"traitlets",
	"""
	Used in Traitlets to specify that no defaults are set in kwargs
	""",
	)

Obviously, the argument of TraitType.__init__, default_vaue is infered to Sentinel, what can I do to suppress the diagnostic?