Fix flaky Netty4Http3IT test suite (#20847) (#20851)

(cherry picked from commit 9ffedcf)

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: opensearch-trigger-bot[bot]

modules/transport-netty4/src/test/java/org/opensearch/http/netty4/Netty4HttpClient.java

@@ -506,6 +506,7 @@ protected void initChannel(DatagramChannel ch) {
 
             final ChannelHandler quicClientCodec = Http3.newQuicClientCodecBuilder()
                 .sslContext(context)
+                .maxIdleTimeout(60, TimeUnit.SECONDS)
                 .initialMaxData(SETTING_HTTP_MAX_CONTENT_LENGTH.get(Settings.EMPTY).getBytes())
                 .initialMaxStreamDataBidirectionalLocal(SETTING_H3_MAX_STREAM_LOCAL_LENGTH.get(Settings.EMPTY).getBytes())
                 .initialMaxStreamDataBidirectionalRemote(SETTING_H3_MAX_STREAM_REMOTE_LENGTH.get(Settings.EMPTY).getBytes())
@@ -518,6 +519,7 @@ protected void initChannel(DatagramChannel ch) {
         @Override
         Channel prepare(Bootstrap clientBootstrap, Channel channel) throws InterruptedException {
             final QuicChannel quicChannel = QuicChannel.newBootstrap(channel)
+                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 30000) // 30 seconds
                 .handler(new Http3ClientConnectionHandler())
                 .remoteAddress(channel.remoteAddress())
                 .connect()