tkinter.font.Font: make __getitem__ and cget behave the same (#4899)

stdlib/3/tkinter/font.pyi

@@ -46,7 +46,6 @@ 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: ...
@@ -59,6 +58,9 @@ class Font:
     @overload
     def cget(self, option: Literal["underline", "overstrike"]) -> Literal[0, 1]: ...
     @overload
+    def cget(self, option: str) -> Any: ...
+    __getitem__ = cget
+    @overload
     def actual(self, option: Literal["family"], displayof: Optional[tkinter.Misc] = ...) -> str: ...
     @overload
     def actual(self, option: Literal["size"], displayof: Optional[tkinter.Misc] = ...) -> int: ...

tests/stubtest_whitelists/py3_common.txt

@@ -362,6 +362,7 @@ timeit.main
 tkinter.Misc.grid_propagate
 tkinter.Misc.pack_propagate
 tkinter.Tk.report_callback_exception  # A bit of a lie, since it's actually a method, but typing it as an attribute allows it to be assigned to
+tkinter.font.Font.__getitem__  # Argument name differs (doesn't matter for __dunder__ methods)
 trace.CoverageResults.__init__
 traceback.FrameSummary.__init__
 traceback.TracebackException.__init__