Type Annotation are not allowed for enum members when using nonmember

Note: if you are reporting a wrong signature of a function or a class in the standard library, then the typeshed tracker is better suited for this report: https://github.com/python/typeshed/issues.

If you have a question about typing or a behavior that you’re seeing in Pyright (as opposed to a bug report or enhancement request), consider posting to the Pyright discussion forum.

Describe the bug
Type annotations are not allowed for enum members when trying to use a nonmember()

I tried to follow the example here, but I am new to using nonmember, so I could be doing something wrong.
https://github.com/microsoft/pyright/issues/7265

Code or Screenshots
If possible, provide a minimal, self-contained code sample (surrounded by triple back ticks) to demonstrate the issue. The code should define or import all referenced symbols.

from enum import IntEnum, nonmember

class BaseIntEnum(IntEnum):
    _db_table: str | None = nonmember(None)
    _db_id_column = nonmember(None)
    _db_name_column = nonmember(None)

If your code relies on symbols that are imported from a third-party library, include the associated import statements and specify which versions of those libraries you have installed.

VS Code extension or command-line
Are you running pyright as a VS Code extension, a language server in another editor, integrated into Pylance, or the command-line tool? Which version?

Using in Zed editor, but to test I used pyright-play.net

Start with the minimal IntEnum example in the issue and run it in pyright-play.net to reproduce the diagnostic. Investigate how Pyright handles annotated enum members assigned with nonmember(); done means the behavior is clarified and covered by a regression check showing the intended diagnostic outcome.