bug #25014 Move deprecation under use statements (greg0ire)

This PR was squashed before being merged into the 3.4 branch (closes #25014).

Discussion
----------

Move deprecation under use statements

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | none
| License       | MIT
| Doc PR        | n/a

Commits
-------

0a5b016 Move deprecation under use statements

Author: nicolas-grekas

LockHandler.php

@@ -11,12 +11,12 @@
 
 namespace Symfony\Component\Filesystem;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use %s or %s instead.', LockHandler::class, SemaphoreStore::class, FlockStore::class), E_USER_DEPRECATED);
-
 use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Lock\Store\FlockStore;
 use Symfony\Component\Lock\Store\SemaphoreStore;
 
+@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use %s or %s instead.', LockHandler::class, SemaphoreStore::class, FlockStore::class), E_USER_DEPRECATED);
+
 /**
  * LockHandler class provides a simple abstraction to lock anything by means of
  * a file lock.