Use `static private` instead of `private static` for method declarations

Closes gh-25452

spring-core/src/main/java/org/springframework/core/MethodParameter.java

@@ -910,7 +910,7 @@ public class MethodParameter {
 		 * Return the generic return type of the method, with support of suspending
 		 * functions via Kotlin reflection.
 		 */
-		static private Type getGenericReturnType(Method method) {
+		private static Type getGenericReturnType(Method method) {
 			try {
 				KFunction<?> function = ReflectJvmMapping.getKotlinFunction(method);
 				if (function != null && function.isSuspend()) {
@@ -927,7 +927,7 @@ public class MethodParameter {
 		 * Return the return type of the method, with support of suspending
 		 * functions via Kotlin reflection.
 		 */
-		static private Class<?> getReturnType(Method method) {
+		private static Class<?> getReturnType(Method method) {
 			try {
 				KFunction<?> function = ReflectJvmMapping.getKotlinFunction(method);
 				if (function != null && function.isSuspend()) {

spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/reactive/AbstractEncoderMethodReturnValueHandler.java

@@ -224,7 +224,7 @@ public abstract class AbstractEncoderMethodReturnValueHandler implements Handler
 	 */
 	private static class KotlinDelegate {
 
-		static private boolean isSuspend(@Nullable Method method) {
+		private static boolean isSuspend(@Nullable Method method) {
 			if (method == null) {
 				return false;
 			}

spring-tx/src/main/java/org/springframework/transaction/interceptor/TransactionAspectSupport.java

@@ -837,7 +837,7 @@ public abstract class TransactionAspectSupport implements BeanFactoryAware, Init
 	 */
 	private static class KotlinDelegate {
 
-		static private boolean isSuspend(Method method) {
+		private static boolean isSuspend(Method method) {
 			KFunction<?> function = ReflectJvmMapping.getKotlinFunction(method);
 			return function != null && function.isSuspend();
 		}

spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractMessageWriterResultHandler.java

@@ -209,7 +209,7 @@ public abstract class AbstractMessageWriterResultHandler extends HandlerResultHa
 	 */
 	private static class KotlinDelegate {
 
-		static private boolean isSuspend(Method method) {
+		private static boolean isSuspend(Method method) {
 			KFunction<?> function = ReflectJvmMapping.getKotlinFunction(method);
 			return function != null && function.isSuspend();
 		}