Describe the bug:

Critical (Fatal error, breaks coupon creation/editing page).

PHP Fatal error: Uncaught Automattic\WooCommerce\GoogleListingsAndAds\View\ViewException: 
The property "is_setup_complete" could not be found within the context of the currently rendered view.
in src/View/ViewException.php:70

The view template views/meta-box/coupon_channel_visibility.php accesses $this->is_setup_complete at line 40, but the method CouponChannelVisibilityMetaBox::get_view_context() in src/Admin/MetaBox/CouponChannelVisibilityMetaBox.php does not include is_setup_complete in the context array passed to the view.

Steps to reproduce:

1. Install and activate Google Listings & Ads with Merchant Center connected
2. Navigate to WooCommerce > Marketing > Coupons > Add coupon (/wp-admin/post-new.php?post_type=shop_coupon)
3. The page throws a PHP Fatal error

Expected behavior:

The view expects these context properties: coupon_id, coupon, channel_visibility, field_id, is_setup_complete, is_channel_supported, get_started_url, sync_status, issues.

Actual behavior:

get_view_context() only provides 8 of these 9 properties, omitting is_setup_complete.
This produce a PHP Fatal error by opening /wp-admin/post-new.php?post_type=shop_coupon

Additional details:

Suggested fix:

Add the missing property to the context array in CouponChannelVisibilityMetaBox::get_view_context():

return [
    'field_id'             => $this->get_visibility_field_id(),
    'coupon_id'            => $coupon_id,
    'coupon'               => $coupon,
    'channel_visibility'   => $this->coupon_helper->get_channel_visibility( $coupon ),
    'sync_status'          => $this->meta_handler->get_sync_status( $coupon ),
    'issues'               => $this->coupon_helper->get_validation_errors( $coupon ),
    'is_setup_complete'    => $this->merchant_center->is_setup_complete(), // <-- missing line
    'is_channel_supported' => $this->merchant_center->is_promotion_supported_country( $target_country ),
    'get_started_url'      => $this->get_start_url(),
];

MerchantCenterService::is_setup_complete() already exists and is used elsewhere in the plugin. No additional dependencies are needed.

Tested: Fix confirmed working. After the change, the coupon creation page loads without errors.