Preserve format style when adding after-shutdown message

[dmlloyd]

Fixes #35637.

[quarkus-bot]

Failing Jobs - Building 46d460d

Status	Name	Step	Failures	Logs	Raw logs	Build scan
✔️	JVM Tests - JDK 11
✔️	JVM Tests - JDK 17
✖	JVM Tests - JDK 20	Build	Failures	Logs	Raw logs

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 20 #

- Failing: extensions/hibernate-orm/deployment extensions/smallrye-graphql/deployment 
! Skipped: extensions/flyway/deployment extensions/hibernate-envers/deployment extensions/hibernate-reactive/deployment and 124 more

📦 extensions/hibernate-orm/deployment

✖ io.quarkus.hibernate.orm.interceptor.ApplicationScopedInterceptorTest. - More details - Source on GitHub

java.lang.RuntimeException: java.lang.RuntimeException: Failed to start quarkus
	at io.quarkus.test.QuarkusUnitTest.beforeAll(QuarkusUnitTest.java:705)
	at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeBeforeAllCallbacks$12(ClassBasedTestDescriptor.java:395)

📦 extensions/smallrye-graphql/deployment

✖ io.quarkus.smallrye.graphql.deployment.RequestLeakDetectionTest.testWithConcurrentCalls line 55 - More details - Source on GitHub

BUG! exception in phase 'class generation' in source unit 'Script1.groovy' unexpected NullPointerException
	at org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:942)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:692)