`$this->clean_workspace()` won't be executed as the `exporter` is null here

[willis-zhang]

The code here:

apple-news/admin/apple-actions/index/class-push.php

Line 301 in a8ce2f2

$this->clean_workspace();

When doing the sync post pushing through:

apple-news/admin/class-admin-apple-post-sync.php

Line 174 in a8ce2f2

$action = new Apple_Actions\Index\Push( $this->settings, $id );

The exporter is null during the __construct(). And there is a null check for the exporter inside clean_workspace()

The it won't execute the code clean_workspace().