Fix bean validation on suspending function parameters

This commit leverages Hibernate Validator's own internal use
of standard Java reflection to perform validation on suspending
function, which fixes the ArrayIndexOutOfBoundsException previously
observed.

Validation of suspending function return values remains unsupported
as Hibernate Validator is not Coroutines aware.

Closes gh-23499

spring-context/src/test/kotlin/org/springframework/validation/beanvalidation/KotlinMethodValidationTests.kt

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.validation.beanvalidation
+
+import jakarta.validation.ValidationException
+import jakarta.validation.Validator
+import jakarta.validation.constraints.NotEmpty
+import kotlinx.coroutines.runBlocking
+import org.assertj.core.api.Assertions
+import org.junit.jupiter.api.Test
+import org.springframework.aop.framework.ProxyFactory
+import org.springframework.validation.annotation.Validated
+
+/**
+ * Kotlin tests for [MethodValidationInterceptor] + [LocalValidatorFactoryBean].
+ *
+ * @author Sebastien Deleuze
+ */
+@Suppress("UsePropertyAccessSyntax")
+class KotlinMethodValidationTests {
+
+	@Test
+	fun parameterValidation() {
+		val bean = MyValidBean()
+		val proxyFactory = ProxyFactory(bean)
+		val validator = LocalValidatorFactoryBean()
+		validator.afterPropertiesSet()
+		proxyFactory.addAdvice(MethodValidationInterceptor(validator as Validator))
+		val proxy = proxyFactory.getProxy() as MyValidBean
+		Assertions.assertThat(proxy.validName("name")).isEqualTo("name")
+		Assertions.assertThatExceptionOfType(ValidationException::class.java).isThrownBy {
+			proxy.validName("")
+		}
+	}
+
+	@Test
+	fun coroutinesParameterValidation() = runBlocking<Unit> {
+		val bean = MyValidCoroutinesBean()
+		val proxyFactory = ProxyFactory(bean)
+		val validator = LocalValidatorFactoryBean()
+		validator.afterPropertiesSet()
+		proxyFactory.addAdvice(MethodValidationInterceptor(validator as Validator))
+		val proxy = proxyFactory.getProxy() as MyValidCoroutinesBean
+		Assertions.assertThat(proxy.validName("name")).isEqualTo("name")
+		Assertions.assertThatExceptionOfType(ValidationException::class.java).isThrownBy {
+			runBlocking {
+				proxy.validName("")
+			}
+		}
+	}
+
+	@Validated
+	open class MyValidBean {
+
+		@Suppress("UNUSED_PARAMETER")
+		open fun validName(@NotEmpty name: String) = name
+	}
+
+	@Validated
+	open class MyValidCoroutinesBean {
+
+		@Suppress("UNUSED_PARAMETER")
+		open suspend fun validName(@NotEmpty name: String) = name
+	}
+
+}