fix(config): Avoid error messages for restricted opcache API

Make changes recently added via #44230 match #8188 to avoid failures in restricted hosting environments.

Fixes #47562

Signed-off-by: Josh <josh.t.richards@gmail.com>

lib/private/Config.php

@@ -184,7 +184,7 @@ private function readData() {
 
  // Invalidate opcache (only if the timestamp changed)
  if (function_exists('opcache_invalidate')) {
- opcache_invalidate($file, false);
+ @opcache_invalidate($file, false);
  }
 
  $filePointer = @fopen($file, 'r');