Add types to set_window_position parameters (#13786)

Author: adamtheturtle

py/selenium/webdriver/remote/webdriver.py

@@ -874,7 +874,7 @@ def get_window_size(self, windowHandle: str = "current") -> dict:
 
         return {k: size[k] for k in ("width", "height")}
 
-    def set_window_position(self, x, y, windowHandle: str = "current") -> dict:
+    def set_window_position(self, x: float, y: float, windowHandle: str = "current") -> dict:
         """Sets the x,y position of the current window. (window.moveTo)
 
         :Args: