Describe the bug
First of all, I apologize if this is indeed the intended behavior.
When calling close on MainWindow and Container I am getting different outcomes. Container closes the UI element and exits the context, while MainWindow closes the inner element but not the OS window.

To Reproduce

from magicgui import event_loop
from magicgui.widgets import Button, MainWindow, Container

button = Button(text="Submit")
container = Container(widgets=[button])
# container = MainWindow(widgets=[button])  # Replace me

button.changed.connect(container.close)

with event_loop() as loop:
    container.show()

Expected behavior
The close behavior to be symmetric. Otherwise, is there an intended alternative to close the context from MainWindow?

Environment (please complete the following information):

• OS: Win11
• backend: [e.g. Qt6]
• magicgui version 0.10.0