ENGCOM-5922: magento/graphql-ce#948 - Move preference for ErrorHandlerInterface #949

 - Merge Pull Request magento/graphql-ce#949 from magento/graphql-ce:2.3-develop#948
 - Merged commits:
   1. fda524e

Author: magento-engcom-team

app/etc/di.xml

@@ -1781,4 +1781,5 @@
     <type name="Magento\Framework\DB\Adapter\AdapterInterface">
         <plugin name="execute_commit_callbacks" type="Magento\Framework\Model\ExecuteCommitCallbacks" />
     </type>
+    <preference for="Magento\Framework\GraphQl\Query\ErrorHandlerInterface" type="Magento\Framework\GraphQl\Query\ErrorHandler"/>
 </config>