Netty 'spring.netty leak detection' default property value is always applied to resource leak detector

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/netty/NettyProperties.java

@@ -32,7 +32,7 @@ public class NettyProperties {
 	/**
 	 * Level of leak detection for reference-counted buffers.
 	 */
-	private LeakDetection leakDetection = LeakDetection.SIMPLE;
+	private LeakDetection leakDetection = null;
 
 	public LeakDetection getLeakDetection() {
 		return this.leakDetection;

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

@@ -2107,7 +2107,8 @@
     },
     {
       "name": "spring.netty.leak-detection",
-      "defaultValue": "simple"
+      "description": "When null, fall back to Netty system default 'simple' or value of -Dio.netty.leakDetection.level. When set, this will overrride value of -Dio.netty.leakDetection.level",
+      "defaultValue": "null"
     },
     {
       "name": "spring.quartz.jdbc.comment-prefix",
@@ -3366,4 +3367,4 @@
       ]
     }
   ]
-}
+}