Merge pull request #18581 from polarbear567

* pr/18581:
  Polish "Add metadata entry for spring.main.register-shutdown-hook"
  Add metadata entry for spring.main.register-shutdown-hook

Closes gh-18581

spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -120,6 +120,7 @@ Rather, pick only the properties that you need.
 	# APPLICATION SETTINGS ({spring-boot-module-code}/SpringApplication.java[SpringApplication])
 	spring.main.allow-bean-definition-overriding=false # Whether bean definition overriding, by registering a definition with the same name as an existing definition, is allowed.
 	spring.main.banner-mode=console # Mode used to display the banner when the application runs.
+	spring.main.register-shutdown-hook=true # Whether the application should have a shutdown hook registered.
 	spring.main.sources= # Sources (class names, package names, or XML resource locations) to include in the ApplicationContext.
 	spring.main.web-application-type= # Flag to explicitly request a specific type of web application. If not set, auto-detected based on the classpath.
 

spring-boot-project/spring-boot/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -607,6 +607,13 @@
       "description": "Mode used to display the banner when the application runs.",
       "defaultValue": "console"
     },
+    {
+      "name": "spring.main.register-shutdown-hook",
+      "type": "java.lang.Boolean",
+      "sourceType": "org.springframework.boot.SpringApplication",
+      "description": "Whether the application should have a shutdown hook registered.",
+      "defaultValue": true
+    },
     {
       "name": "spring.main.show-banner",
       "type": "java.lang.Boolean",