bug symfony#54187 [FrameworkBundle] Fix PHP 8.4 deprecation on ReflectionMethod (alexandre-daubois)

This PR was merged into the 5.4 branch.

Discussion
----------

[FrameworkBundle] Fix PHP 8.4 deprecation on `ReflectionMethod`

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Issues        | Part of symfony#54180
| License       | MIT

This fixes:

```
16x: Calling ReflectionMethod::__construct() with 1 argument is deprecated, use ReflectionMethod::createFromMethodName() instead
    4x in RouterDebugCommandTest::testDumpAllRoutes from Symfony\Bundle\FrameworkBundle\Tests\Functional
    4x in RouterDebugCommandTest::testSearchMultipleRoutesWithoutInteraction from Symfony\Bundle\FrameworkBundle\Tests\Functional
    4x in RouterDebugCommandTest::testShowAliases from Symfony\Bundle\FrameworkBundle\Tests\Functional
    2x in TextDescriptorTest::testDescribeRouteWithControllerLink from Symfony\Bundle\FrameworkBundle\Tests\Console\Descriptor
    1x in RouterDebugCommandTest::testDumpOneRoute from Symfony\Bundle\FrameworkBundle\Tests\Functional
    ...
```

Commits
-------

8746765 [FrameworkBundle] Fix PHP 8.4 deprecation

Author: nicolas-grekas

src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php

@@ -559,7 +559,7 @@ private function formatControllerLink($controller, string $anchorText, ?callable
             } elseif (!\is_string($controller)) {
                 return $anchorText;
             } elseif (str_contains($controller, '::')) {
-                $r = new \ReflectionMethod($controller);
+                $r = new \ReflectionMethod(...explode('::', $controller, 2));
             } else {
                 $r = new \ReflectionFunction($controller);
             }