bug #26794 [PhpUnitBridge] Catch deprecation error handler (cvilleger)

This PR was squashed before being merged into the 3.4 branch (closes #26794).

Discussion
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[PhpUnitBridge] Catch deprecation error handler

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #26476
| License       | MIT

This fix `DeprecationErrorHandler` to catch deprecation triggered by `SymfonyTestListenerTrait`. `$trace[$i]['class']` points to `Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerForV6`, not the aliased version. The condition has been refactored to handle future version `SymfonyTestsListenerForV{x}`

Commits
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f40f181 [PhpUnitBridge] Catch deprecation error handler

src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php

@@ -118,7 +118,7 @@ public static function register($mode = 0)
             }
 
             if (isset($trace[$i]['object']) || isset($trace[$i]['class'])) {
-                if (isset($trace[$i]['class']) && in_array($trace[$i]['class'], array('Symfony\Bridge\PhpUnit\SymfonyTestsListener', 'Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListener'), true)) {
+                if (isset($trace[$i]['class']) && 0 === strpos($trace[$i]['class'], 'Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerFor')) {
                     $parsedMsg = unserialize($msg);
                     $msg = $parsedMsg['deprecation'];
                     $class = $parsedMsg['class'];
@@ -216,7 +216,7 @@ public static function register($mode = 0)
 
                 $groups = array('unsilenced', 'remaining');
                 if (DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode) {
-                        $groups[] = 'remaining vendor';
+                    $groups[] = 'remaining vendor';
                 }
                 array_push($groups, 'legacy', 'other');