widget_display_callback hook is missing an argument

[Denis-de-Bernardy]

without it, you cannot override the widget entirely.

[azaozz]

Can probably access this with:

$wp_registered_widgets[ $settings['id'] ]

but may as well add it to the filter for convenience.

[azaozz]

(In [11374]) Add param to the widget_display_callback hook, props Denis-de-Bernardy, fixes #9852

[Denis-de-Bernardy]

Thanks. I'll give the other two hooks a shot and will report back if any extra args/changes are needed.