setCanNavigateBack
Sets whether gestures and shortcuts for closing subpages are enabled.
The supported gestures are:
One-finger swipe on touchscreens
Horizontal scrolling on touchpads (usually two-finger swipe)
Back mouse button
The keyboard back key is also supported, as well as the Alt+← shortcut.
For right-to-left locales, gestures and shortcuts are reversed.
Has no effect for subpages added with method@PreferencesWindow.push_subpage.
Parameters
canNavigateBack
the new value