[Enhancement] Create new filter `wc_lock_sku_query` for SKU lock query. (#49755)

Create a new filter wc_lock_sku_query to allow third party to filter the SKU lock query.

Fixes #49660

* Create new filter wc_lock_sku_query.

* Bail early with filter prop @coreymckrill

Co-authored-by: Corey McKrill <916023+coreymckrill@users.noreply.github.com>

* Add changefile(s) from automation for the following project(s): woocommerce

---------

Co-authored-by: Corey McKrill <916023+coreymckrill@users.noreply.github.com>
Co-authored-by: github-actions <github-actions@github.com>

plugins/woocommerce/changelog/49755-fix-49660-new-filter-sku-lock

@@ -0,0 +1,4 @@
+Significance: minor
+Type: enhancement
+
+Add a filter to override the SKU database lock.

plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php

@@ -131,6 +131,20 @@ class WC_Product_Data_Store_CPT extends WC_Data_Store_WP implements WC_Object_Da
 			$sku,
 			$sku
 		);
+
+		/**
+		 * Filter to bail early on the SKU lock query.
+		 *
+		 * @since 9.3.0
+		 *
+		 * @param bool|null  $locked  Set to a boolean value to short-circuit the SKU lock query.
+		 * @param WC_Product $product The product being created.
+		 */
+		$locked = apply_filters( 'wc_product_pre_lock_on_sku', null, $product );
+		if ( ! is_null( $locked ) ) {
+			return boolval( $locked );
+		}
+
 		// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
 		$result = $wpdb->query( $query );