(🐞) error when there are defs between overloads/properties

[KotlinIsland]

from typing import overload
class A:
    @property
    def foo(self) -> bool: ...
    a: int
    @foo.setter # error: Name "foo" already defined on line 3 # error: "Callable[[A], bool]" has no attribute "setter"
    def foo(self, value) -> None: ...
    
    @overload # error: Single overload definition, multiple required
    def bar(self, i: int) -> int: ...
    b: int  
    @overload # error: Name "bar" already defined on line 9 # error: Single overload definition, multiple required
    def bar(self, i: str) -> str: ...

    def bar(self, i: object) -> object: ...

stubgen can insert attribute definitions between the property defs

[AlexWaygood]

Duplicate of #1465 (for properties) and #10120 (for overloads)