fix(identity): complete native certification review flow

src/AKSRT/Admin/SchemaProvider.php

@@ -394,6 +394,8 @@ class SchemaProvider {
         switch ($type) {
             case 'html':
                 return wp_kses_post((string) $value);
+            case 'textarea':
+                return sanitize_textarea_field((string) $value);
             case 'code':
                 return is_string($value) ? wp_unslash($value) : '';
             case 'url':
@@ -433,7 +435,7 @@ class SchemaProvider {
             'switch'   => 'bool',
             'input'    => 'string',
             'text'     => 'string',
-            'textarea' => 'string',
+            'textarea' => 'textarea',
             'number'   => 'int',
             'slider'   => 'int',
             'select'   => 'string',