fix(intl): allow translator without event bus

Author: xHeaven

packages/intl/composer.json

@@ -14,7 +14,8 @@
     },
     "suggest": {
         "tempest/datetime": "In order to use the `datetime` function",
-        "tempest/icon": "In order to use the `icon` function"
+        "tempest/icon": "In order to use the `icon` function",
+        "tempest/event-bus": "Enables dispatching translation miss and translation failure events."
     },
     "autoload": {
         "files": [

packages/intl/src/TranslatorInitializer.php

@@ -18,7 +18,7 @@ public function initialize(Container $container): Translator
             config: $container->get(IntlConfig::class),
             catalog: $container->get(Catalog::class),
             formatter: $container->get(MessageFormatter::class),
-            eventBus: $container->get(EventBus::class),
+            eventBus: interface_exists(EventBus::class) ? $container->get(EventBus::class) : null,
         );
     }
 }