Update UnusedChannelExceptionHandler to extend inboundHandler

Author: zoewangg

http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/internal/UnusedChannelExceptionHandler.java

@@ -18,8 +18,8 @@
 import static software.amazon.awssdk.http.nio.netty.internal.utils.ChannelUtils.getAttribute;
 
 import io.netty.channel.ChannelHandler;
-import io.netty.channel.ChannelHandlerAdapter;
 import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.handler.timeout.TimeoutException;
 import java.io.IOException;
 import java.util.Optional;
@@ -36,7 +36,7 @@
  */
 @SdkInternalApi
 @ChannelHandler.Sharable
-public final class UnusedChannelExceptionHandler extends ChannelHandlerAdapter {
+public final class UnusedChannelExceptionHandler extends ChannelInboundHandlerAdapter {
     public static final UnusedChannelExceptionHandler INSTANCE = new UnusedChannelExceptionHandler();
 
     private static final Logger log = Logger.loggerFor(UnusedChannelExceptionHandler.class);