MAGETWO-70059: Order is not shown in customer account if its Status not visible on Storefront

- Fix unit test

Author: viktym

app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Status/Assign/FormTest.php

@@ -133,7 +133,7 @@ public function testToHtml()
             ->with(
                 'visible_on_front',
                 'checkbox',
-                ['name' => 'visible_on_front', 'label' => __('Visible On Storefront'), 'value' => 1]
+                ['name' => 'visible_on_front', 'label' => __('Visible On Storefront'), 'value' => 1, 'checked' => true]
             );
 
         $this->block->toHtml();