QScreenCapture: video output is corrupted if permission is not given

This issue is specific to Linux when on Wayland. The device tested was a Lenovo ThinkPad P1 Gen 6, running Manjaro Linux. The desktop environment used was Gnome 48. This issue was tested using the manual test "screencapture" in Multimedia.

When using QScreenCapture and calling "start()", I am faced with a prompt asking me which display to share. If I then press "cancel", QScreenCapture object will still become active and corrupted frames will start being displayed in the VideoOutput.

It works if I choose a screen to capture, but not if I try to cancel the operation.