add missing csrf_token in REX_YFORM_TABLE_DATA[] input widget

Author: tyrant88

lib/RexVar/var_yform_dataset.php

@@ -45,6 +45,8 @@ protected function getOutput()
                 'table' => $table,
                 'fieldName' => $fieldName,
             ];
+            $_csrf_key = $table->getCSRFKey();
+            $args += rex_csrf_token::factory($_csrf_key)->getUrlParams();
 
             if ($this->hasArg('multiple') && $this->getArg('multiple')) {
                 $options = [];