Merge pull request #31912 from Kalpesh-18

* gh-31912:
  Polish "Allow config prop annotation processor to find reactive cookie props"
  Allow config prop annotation processor to find reactive cookie props

Closes gh-31912

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -323,6 +323,7 @@ public static class Session {
 			@DurationUnit(ChronoUnit.SECONDS)
 			private Duration timeout = Duration.ofMinutes(30);
 
+			@NestedConfigurationProperty
 			private final Cookie cookie = new Cookie();
 
 			public Duration getTimeout() {