Fix coding-standard warnings and pre-existing test fixture mismatch

- Expand empty closures `function () {}` to multi-line form to satisfy
  the Magento2 coding standard (closing brace must be on its own line)
  in QueueTest.php and CallbackInvokerTest.php
- Update TRemoteService.txt fixture to use nullable type `?int $typeId`
  matching the TRepositoryInterface source; the old fixture used `int`
  which caused RemoteServiceGeneratorTest::testGenerate #1 to fail

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: thebraziliandeveloper

lib/internal/Magento/Framework/Amqp/Test/Unit/QueueTest.php

@@ -91,7 +91,8 @@ public function testSubscribeWithLimitCallsBasicQosAndBasicConsume(): void
             ->method('getChannel')
             ->willReturn($amqpChannel);
 
-        $this->model->subscribeWithLimit(function () {}, 10);
+        $this->model->subscribeWithLimit(function () {
+        }, 10);
     }
 
     /**
@@ -103,7 +104,8 @@ public function testSubscribeWithLimitDoesNothingWhenMaxMessagesIsZero(): void
         // getChannel must never be called — no AMQP interaction should occur.
         $this->config->expects($this->never())->method('getChannel');
 
-        $this->model->subscribeWithLimit(function () {}, 0);
+        $this->model->subscribeWithLimit(function () {
+        }, 0);
     }
 
     /**
@@ -116,7 +118,8 @@ public function testSubscribeWithLimitExitsCleanlyOnAMQPTimeout(): void
         $amqpChannel->method('basic_qos');
         $amqpChannel->method('basic_consume')
             ->willReturnCallback(function () use ($amqpChannel) {
-                $amqpChannel->callbacks = ['test-consumer-tag' => function () {}];
+                $amqpChannel->callbacks = ['test-consumer-tag' => function () {
+                }];
                 return 'test-consumer-tag';
             });
         $amqpChannel->expects($this->once())
@@ -125,6 +128,7 @@ public function testSubscribeWithLimitExitsCleanlyOnAMQPTimeout(): void
         $this->config->method('getChannel')->willReturn($amqpChannel);
 
         // Must not throw; AMQPTimeoutException signals empty queue, not a failure.
-        $this->model->subscribeWithLimit(function () {}, 10, 1);
+        $this->model->subscribeWithLimit(function () {
+        }, 10, 1);
     }
 }

lib/internal/Magento/Framework/MessageQueue/Test/Unit/CallbackInvokerTest.php

@@ -72,7 +72,8 @@ public function testInvokeUsesSubscribeWithLimitForAmqpQueue(): void
             ->with($this->isType('callable'), 50, 0);
         $queue->expects($this->never())->method('dequeue');
 
-        $this->invoker->invoke($queue, 50, function () {});
+        $this->invoker->invoke($queue, 50, function () {
+        });
     }
 
     /**
@@ -91,7 +92,8 @@ public function testInvokePassesWaitTimeoutOneWhenNotWaitingForMessages(): void
             ->method('subscribeWithLimit')
             ->with($this->isType('callable'), 10, 1);
 
-        $this->invoker->invoke($queue, 10, function () {});
+        $this->invoker->invoke($queue, 10, function () {
+        });
     }
 
     /**
@@ -110,7 +112,8 @@ public function testInvokePassesWaitTimeoutZeroWhenWaitingForMessages(): void
             ->method('subscribeWithLimit')
             ->with($this->isType('callable'), 10, 0);
 
-        $this->invoker->invoke($queue, 10, function () {});
+        $this->invoker->invoke($queue, 10, function () {
+        });
     }
 
     /**

lib/internal/Magento/Framework/MessageQueue/Test/Unit/Code/Generator/_files/TRemoteService.txt

@@ -36,7 +36,7 @@ class TRepositoryInterfaceRemote implements TRepositoryInterface
     /**
      * @inheritdoc
      */
-    public function get(string $attribute, int $typeId = null): \Magento\Framework\MessageQueue\Code\Generator\TInterface
+    public function get(string $attribute, ?int $typeId = null): \Magento\Framework\MessageQueue\Code\Generator\TInterface
     {
         return $this->publisher->publish(
             'magento.framework.messageQueue.code.generator.tRepositoryInterface.get',