make tkinter.font.Font behave similarly to tkinter widgets (#4469)

stdlib/3/tkinter/font.pyi

@@ -1,5 +1,5 @@
 import tkinter
-from typing import List, Optional, Tuple, TypeVar, Union, overload
+from typing import Any, List, Optional, Tuple, TypeVar, Union, overload
 from typing_extensions import Literal, TypedDict
 
 NORMAL: Literal["normal"]
@@ -48,6 +48,8 @@ class Font:
         underline: bool = ...,
         overstrike: bool = ...,
     ) -> None: ...
+    def __getitem__(self, key: str) -> Any: ...
+    def __setitem__(self, key: str, value: Any) -> None: ...
     @overload
     def cget(self, option: Literal["family"]) -> str: ...
     @overload
@@ -58,7 +60,6 @@ class Font:
     def cget(self, option: Literal["slant"]) -> Literal["roman", "italic"]: ...
     @overload
     def cget(self, option: Literal["underline", "overstrike"]) -> Literal[0, 1]: ...
-    __getitem__ = cget
     @overload
     def actual(self, option: Literal["family"], displayof: Optional[tkinter.Misc] = ...) -> str: ...
     @overload
@@ -73,18 +74,6 @@ class Font:
     def actual(self, option: None, displayof: Optional[tkinter.Misc] = ...) -> _FontDict: ...
     @overload
     def actual(self, *, displayof: Optional[tkinter.Misc] = ...) -> _FontDict: ...
-    @overload
-    def __setitem__(self, key: Literal["family"], value: str) -> None: ...
-    @overload
-    def __setitem__(self, key: Literal["size"], value: int) -> None: ...
-    @overload
-    def __setitem__(self, key: Literal["weight"], value: Literal["normal", "bold"]) -> None: ...
-    @overload
-    def __setitem__(self, key: Literal["slant"], value: Literal["roman", "italic"]) -> None: ...
-    @overload
-    def __setitem__(self, key: Literal["underline"], value: bool) -> None: ...
-    @overload
-    def __setitem__(self, key: Literal["overstrike"], value: bool) -> None: ...
     def config(
         self,
         *,