bug #40398 [FrameworkBundle] [4.4]: Fix method name compare in ResolveControllerNameSubscriber (glensc)

This PR was merged into the 4.4 branch.

Discussion
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[FrameworkBundle] [4.4]: Fix method name compare in ResolveControllerNameSubscriber

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | <!-- prefix each issue number with "Fix #", no need to create an issue if none exist, explain below instead -->
| License       | MIT
| Doc PR        | <!-- required for new features -->

The left side to `strtolower` was not actually lowercased, so it would be always `false`.

The bug was introduced in 6c109c71a9 (https://github.com/symfony/symfony/pull/31938)

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Commits
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69431a3db3 Fix method name compare in ResolveControllerNameSubscriber

src/Symfony/Bundle/FrameworkBundle/EventListener/ResolveControllerNameSubscriber.php

@@ -48,7 +48,7 @@ class ResolveControllerNameSubscriber implements EventSubscriberInterface
 
     public function __call(string $method, array $args)
     {
-        if ('onKernelRequest' !== $method && 'onKernelRequest' !== strtolower($method)) {
+        if ('onKernelRequest' !== $method && 'onkernelrequest' !== strtolower($method)) {
             throw new \Error(sprintf('Error: Call to undefined method "%s::%s()".', static::class, $method));
         }