[tkinter] Add config alias for tkinter.Misc (#15779)

Author: Akuli

stdlib/@tests/stubtest_allowlists/common.txt

@@ -17,13 +17,6 @@ turtledemo
 turtledemo\..+
 
 
-# ======================================================================
-# TODO: Module members that exist at runtime, but are missing from stubs
-# ======================================================================
-
-tkinter.Misc.config
-
-
 # ======================================================================
 # Modules that exist at runtime, but are deliberately missing from stubs
 # ======================================================================

stdlib/tkinter/__init__.pyi

@@ -679,8 +679,7 @@ class Misc:
     def __getitem__(self, key: str) -> Any: ...
     def cget(self, key: str) -> Any: ...
     def configure(self, cnf: Any = None) -> Any: ...
-    # TODO: config is an alias of configure, but adding that here creates
-    # conflict with the type of config in the subclasses. See #13149
+    config = configure
 
 class CallWrapper:
     func: Incomplete