pyright still depends on typing._TypedDict

[srittau]

Describe the bug
As announced in https://discuss.python.org/t/removing-type-checker-internals-from-typeshed/87960, we plan to (re)move type-checker-special internals from typeshed. @erictraut actually did the necessary changes in #10437.

But when trying to remove typing._TypedDict from typeshed in python/typeshed#14960, pyright starts to report errors like this for all TypedDicts:

/home/runner/work/typeshed/typeshed/stdlib/_ssl.pyi
  /home/runner/work/typeshed/typeshed/stdlib/_ssl.pyi:24:7 - error: All base classes for TypedDict classes must also be TypedDict classes
    Class "TypedDict" is not a TypedDict (reportGeneralTypeIssues)
  /home/runner/work/typeshed/typeshed/stdlib/_ssl.pyi:38:7 - error: All base classes for TypedDict classes must also be TypedDict classes

So it seems that there is some lingering issue in pyright.

[erictraut]

Thanks for reporting. I think I had this working at one point, but it regressed and was able to fall back on typing._TypedDict, so none of the tests detected the regression. This will be fixed in the next release.