Track unsilenced deprecation only for userland

Author: nicolas-grekas

DeprecationErrorHandler.php

@@ -146,7 +146,7 @@ public function handleError($type, $msg, $file, $line, $context = [])
 
         $msg = $deprecation->getMessage();
 
-        if (error_reporting() & $type) {
+        if (\E_DEPRECATED !== $type && (error_reporting() & $type)) {
             $group = 'unsilenced';
         } elseif ($deprecation->isLegacy()) {
             $group = 'legacy';