Type checking for `property.{fget,fset,fdel}`

When trying to fix an issue in typeshed we found that both mypy and pyright raised incorrect errors that were also inconsistent with one another so I'm creating this issue to facilitate further discussion on resolving this.

class A:
    @property
    def foo(self):
        return 'a'

A.foo.fget(A())

mypy: "Callable[[A], Any]" has no attribute "fget"
pyright: Expected 0 positional arguments

Initial PR attempt and relevant discussions can be found here

先查看链接的 typeshed issue #7516 和 PR #7520，然后比较 mypy 和 pyright 针对本 issue 中示例的诊断结果。一个有用的结果是就 property.fget、property.fset 和 property.fdel 的解释达成一致，随后进行具体且经过验证的后续更改。