Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: johnbillion

src/wp-includes/class-wpdb.php

@@ -2568,7 +2568,7 @@ public function insert( $table, $data, $format = null ) {
 	 *                          format is ignored in this case.
 	 * @param string[] $format  Optional. An array of formats to be mapped to each of the values in each row.
 	 *                          A format is one of '%d', '%f', '%s' (integer, float, string).
-	 *                          If omitted, all values in `$data` will be treated as strings unless otherwise
+	 *                          If omitted, all values in `$rows` will be treated as strings unless otherwise
 	 *                          specified in wpdb::$field_types. Default empty array.
 	 * @return int|false The number of rows inserted, or false on error.
 	 */

src/wp-includes/meta.php

@@ -228,7 +228,7 @@ function bulk_add_metadata( string $meta_type, int $object_id, array $meta_field
 	$added_keys   = array();
 
 	foreach ( $meta_fields as $meta_key => $meta_value ) {
-		// expected_slashed ($meta_key)
+		// expected_slashed ($meta_key, $meta_value)
 		$meta_key   = wp_unslash( $meta_key );
 		$meta_value = wp_unslash( $meta_value );
 		$meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type, $meta_subtype );
@@ -279,9 +279,9 @@ function bulk_add_metadata( string $meta_type, int $object_id, array $meta_field
 	wp_cache_delete( $object_id, $meta_type . '_meta' );
 
 	foreach ( $data as $datum ) {
-		list( $object_id, $meta_key, $meta_value ) = $datum;
+		list( $row_object_id, $meta_key, $meta_value ) = $datum;
 		/** This action is documented in wp-includes/meta.php */
-		do_action( "added_{$meta_type}_meta", $all_mids[ $meta_key ], $object_id, $meta_key, $meta_value );
+		do_action( "added_{$meta_type}_meta", $all_mids[ $meta_key ], $row_object_id, $meta_key, $meta_value );
 	}
 
 	return $all_mids;

src/wp-includes/ms-site.php

@@ -1068,7 +1068,7 @@ function add_site_meta( $site_id, $meta_key, $meta_value, $unique = false ) {
  * @return array<string,int>|false Array of meta IDs keyed by their meta key on success, false on failure.
  */
 function bulk_add_site_meta( int $site_id, array $meta_fields ) {
-	return bulk_add_metadata( 'site', $site_id, $meta_fields );
+	return bulk_add_metadata( 'blog', $site_id, $meta_fields );
 }
 
 /**