Due date's type is partially unknown in pyright strict mode

Bug description

I'm running into an issue with the ApiDue type where pyright (and basedpyright) report it as being partially unknown in strict mode.

error: Type of "date" is partially unknown
Type of "date" is "DatePattern[Unknown] | DateTimePattern[Unknown] | UTCDateTimePattern[Unknown]" [reportUnknownMemberType]

It's entirely possible that I'm doing something wrong here, or this is an issue with pyright/basedpyright, so apologies if this is better as a question rather than a bug report.

Expected behaviour

I expected that the usage of the ApiDue type (e.g. task.due.date) does not give a partially unknown error in pyright strict mode.

Is reproducible

Yes

To reproduce

    todoist_api = TodoistAPIAsync('token')
    task_generator = await todoist_api.filter_tasks(query=filter)
    async for task_list in task_generator:
        for task in task_list:
            if task.due:
                print(task.due.date)

Steps taken to try to reproduce

N/A

Screenshots

Version information:

• Package version: 3.01
• Python version: 3.13

Additional information

N/A

Start at the ApiDue type definition and reproduce the reported task.due.date access with Python 3.13 and pyright strict mode. Trace why the date type retains an unknown parameter, then verify that the reproduction no longer reports a partially unknown type.