[AI Bundle] Fix null model names

Author: OskarStark

src/ai-bundle/config/options.php

@@ -190,7 +190,7 @@
                                         ->thenInvalid(\sprintf('The model class "%%s" must extend %s.', Model::class))
                                     ->end()
                                 ->end()
-                                ->stringNode('name')->defaultNull()->end()
+                                ->stringNode('name')->isRequired()->end()
                                 ->arrayNode('options')
                                     ->variablePrototype()->end()
                                 ->end()
@@ -531,7 +531,7 @@
                                         ->thenInvalid(\sprintf('The model class "%%s" must extend %s.', Model::class))
                                     ->end()
                                 ->end()
-                                ->stringNode('name')->defaultNull()->end()
+                                ->stringNode('name')->isRequired()->end()
                                 ->arrayNode('options')
                                     ->variablePrototype()->end()
                                 ->end()

src/ai-bundle/src/AiBundle.php

@@ -504,9 +504,7 @@ private function processAgentConfig(string $name, array $config, ContainerBuilde
         ['class' => $modelClass, 'name' => $modelName, 'options' => $options] = $config['model'];
 
         $modelDefinition = new Definition($modelClass);
-        if (null !== $modelName) {
-            $modelDefinition->setArgument(0, $modelName);
-        }
+        $modelDefinition->setArgument(0, $modelName);
         if ([] !== $options) {
             $modelDefinition->setArgument(1, $options);
         }
@@ -1105,9 +1103,7 @@ private function processVectorizerConfig(string $name, array $config, ContainerB
         ['class' => $modelClass, 'name' => $modelName, 'options' => $options] = $config['model'];
 
         $modelDefinition = (new Definition((string) $modelClass));
-        if (null !== $modelName) {
-            $modelDefinition->setArgument(0, $modelName);
-        }
+        $modelDefinition->setArgument(0, $modelName);
         if ([] !== $options) {
             $modelDefinition->setArgument(1, $options);
         }