bug #559 Fix rollbar handler to use RollbarLogger with Monolog 2+ (websirnik, GromNaN)

This PR was merged into the 3.x branch.

Discussion
----------

Fix `rollbar` handler to use `RollbarLogger` with Monolog 2+

| Q             | A
| ------------- | ---
| Branch?       | 3.x <!-- for features and bug -->
| Bug fix?      | yes
| New feature?  | o
| Deprecations? | no
| License       | MIT

Improves the compatibility with the latest Rollbar library. Rollbar has renamed their classes a while ago.

Commits
-------

b6f5d69 Update changelog
0c10c52 Use conditional class name depending on the Monolog version
93fc8f3 Update RollbarNotifier to RollbarLogger in DI

Author: GromNaN

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## Unreleased
 
+## unreleased
+
+* Fix `rollbar` handler to use `RollbarLogger` with Monolog 2+
+
 ## 3.11.0 (2025-11-27)
 
 * Reorganize files to match the "Reusable Bundles" structure

src/DependencyInjection/MonologExtension.php

@@ -930,7 +930,7 @@ private function buildHandler(ContainerBuilder $container, $name, array $handler
                 } else {
                     $config = $handler['config'] ?: [];
                     $config['access_token'] = $handler['token'];
-                    $rollbar = new Definition('RollbarNotifier', [
+                    $rollbar = new Definition(Logger::API === 1 ? 'RollbarNotifier' : 'Rollbar\RollbarLogger', [
                         $config,
                     ]);
                     $rollbarId = 'monolog.rollbar.notifier.'.sha1(json_encode($config));