Changes property access of product id to public.

[krutidugade]

Changes proposed in this Pull Request:

Private access of $id property done in PR 2606, breaks the product feed functionality. The Product feed doesn't populate variable products. This is happening because the id can't be accessed by fbproductfeed.php file at

facebook-for-woocommerce/includes/fbproductfeed.php

Line 475 in b152860

$product_data['default_product'] = $parent_attribute_values['default_variant_id'] == $woo_product->id ? 'default' : '';

This PR changes the access from private to public which restores the original product feed functionality.

• Do the changed files pass phpcs checks? Please remove phpcs:ignore comments in changed files and fix any issues, or delete if not practical.

Screenshots:

Before:

After:

Detailed test instructions:

1. Install and Activate the plugin
2. Switch to the branch in this PR
3. Go to WooCommerce > Status > Scheduled Actions > Pending
4. Run wc_facebook_regenerate_feed action
5. Go to wp-content/uploads/facebook_for_woocommerce folder
6. Open the product feed csv file
7. Verify you see variable products along with all other products

Changelog entry

Fix - Changes property access of product id from private to public

[ibndawood]

Thank you, @krutidugade, for the changes. Excellent work with the smoke testing and debugging.