feat: migrate Products page to full DataTable

Update Products page with full-featured DataTable:
- All columns (ID, title, price with multi-currency, type, stock, status)
- Status filter (All, Published, Draft)
- Inline actions (edit variations, delete, duplicate)
- Bulk delete and Add New modal
- VariationPricingTable editor preserved for editing individual products

All 7 admin listing pages now use the full-featured DataTable component:
✓ Forms - with shortcode copy button
✓ Coupons - with type and amount display
✓ Access - with product relation
✓ Orders - specialized with filters and date ranges
✓ Products - with multi-currency pricing
✓ Customers - read-only with order counts
✓ Licenses - read-only with status labels

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

build/admin.asset.php

@@ -1 +1 @@
-<?php return array('dependencies' => array('react', 'wp-components', 'wp-element', 'wp-i18n', 'wp-icons/build/arrow-left', 'wp-icons/build/bell', 'wp-icons/build/eye-closed', 'wp-icons/build/eye-opened', 'wp-icons/build/list', 'wp-icons/build/message', 'wp-icons/build/minus', 'wp-icons/build/plus', 'wp-icons/build/trash', 'wp-icons/build/visible'), 'version' => 'ea8676d843297ad5e987');
+<?php return array('dependencies' => array('react', 'wp-components', 'wp-element', 'wp-i18n', 'wp-icons/build/arrow-left', 'wp-icons/build/bell', 'wp-icons/build/eye-closed', 'wp-icons/build/eye-opened', 'wp-icons/build/list', 'wp-icons/build/message', 'wp-icons/build/minus', 'wp-icons/build/trash', 'wp-icons/build/visible'), 'version' => '42bdafafef51db2063cf');