minor #48243 Fix some native constant and function invocations (fancyweb)

This PR was merged into the 6.2 branch.

Discussion
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Fix some native constant and function invocations

| Q             | A
| ------------- | ---
| Branch?       | 6.2
| Bug fix?      | no
| New feature?  | no
| Deprecations? | -
| Tickets       | -
| License       | MIT
| Doc PR        | -

Commits
-------

17e096dcaf Fix some native constant and function invocations

Author: fabpot

Helper/QuestionHelper.php

@@ -430,7 +430,7 @@ private function getHiddenResponse(OutputInterface $output, $inputStream, bool $
 
         $value = fgets($inputStream, 4096);
 
-        if (4095 === strlen($value)) {
+        if (4095 === \strlen($value)) {
             $errOutput = $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output;
             $errOutput->warning('The value was possibly truncated by your shell or terminal emulator');
         }