Lostpointercapture fires on document when target is removed

# Pointer Events - lostpointercapture when capturing element is removed

#### Test Description: This test checks if lostpointercapture is fired at the document when the capturing node is removed from the document. Complete the following actions:

1. Press and hold left mouse button over "Set Capture" button. "gotpointercapture" should be logged inside of the black rectangle.
2. "lostpointercapture" should be logged inside of the black rectangle after a short delay.

# Pointer Events Capture Test

The following pointer types were detected: .