Add an AbstractGenericHttpMessageConverter constructor

This commit adds a new
AbstractGenericHttpMessageConverter(Charset, MediaType...)
constructor, similar to the one present in
AbstractHttpMessageConverter.

Closes gh-33563

spring-web/src/main/java/org/springframework/http/converter/AbstractGenericHttpMessageConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -19,6 +19,7 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.lang.reflect.Type;
+import java.nio.charset.Charset;
 
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpOutputMessage;
@@ -60,6 +61,17 @@ protected AbstractGenericHttpMessageConverter(MediaType... supportedMediaTypes)
 		super(supportedMediaTypes);
 	}
 
+	/**
+	 * Construct an {@code AbstractGenericHttpMessageConverter} with a default charset and
+	 * multiple supported media types.
+	 * @param defaultCharset the default character set
+	 * @param supportedMediaTypes the supported media types
+	 * @since 6.2
+	 */
+	protected AbstractGenericHttpMessageConverter(Charset defaultCharset, MediaType... supportedMediaTypes) {
+		super(defaultCharset, supportedMediaTypes);
+	}
+
 
 	@Override
 	protected boolean supports(Class<?> clazz) {