@override in _type_checker_internals.TypedDictFallback

[jorenham]

Due to a bug in the pyright github action, the _typeshed._type_checker_internals module is being checked by pyright in the CI of scipy-stubs. And apparently, was @override one some methods in TypedDictFallback, causing the CI to fail (see e.g. https://github.com/scipy/scipy-stubs/actions/runs/15169287965/job/42655058438?pr=521). And just to be clear, I don't consider this to be the fault of typeshed or anything. I just figured that I might as well add those @override's, for the sake of completeness I suppose 🤷.

[AlexWaygood]

Hmm, we don't generally decorate methods with @override in typeshed, and there's some debate about whether it would really be useful for us given our existing CI tooling (see #10871)

[jorenham]

Hmm, we don't generally decorate methods with @override in typeshed, and there's some debate about whether it would really be useful for us given our existing CI tooling (see #10871)

Yea I expected something like that, I just thought I'd give it a shot either way. Thanks for the review :)

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉