Example on Window signal files_dropped

[thiagola92]

Your Godot version:
v4.4.dev3.official [f4af8201b]

Issue description:
In the signal files_dropped, the example use get_viewport():

func _ready():
	get_viewport().files_dropped.connect(on_files_dropped)

func on_files_dropped(files):
	print(files)

Wouldn't be more appropriated to use get_window()?

func _ready():
	get_window().files_dropped.connect(on_files_dropped)

func on_files_dropped(files):
	print(files)

There is any guarantee that get_viewport() will always return a Window? Is important because the signal files_dropped only exists in Windows, this could cause an error otherwise.

URL to the documentation page:
https://docs.godotengine.org/en/stable/classes/class_window.html#class-window-signal-files-dropped