Fix wrong QWidget::geometry() after restoreGeometry() for maximized windows

Revert "GUI: fix the maximized state when restoring geometry"
since this patch does not cause any flicker and just fixes the
actually wrong attribute

This reverts commit 0cc76e77f5b2b5bd0c4947ae29ebbf9d5b74aa41.

Signed-off-by: Jan Kundrát <jkt@flaska.net>

BUG: 323715
REVIEW: 112220