gh-137626: fix error messages of dict() and dict().update()

[alex-semenyuk]

fix error messages of dict() and dict().update()

TypeError: dict expected at most 1 positional argument, got 2

TypeError: update expected at most 1 positional argument, got 2

instead of

TypeError: dict expected at most 1 argument, got 2

TypeError: update expected at most 1 argument, got 2

• Issue: The error messages of dict() and dict().update() should say positional argument instead of only argument #137626

[serhiy-storchaka]

I do not think that special casing "dict" and "dict.update" is an appropriate solution. There are many other cases, and we should also think about third-party code. This is a larger issue.