Hybrid Shuffle may hang when exclusive buffers per channel is set to 0

@RepeatedTest(10)
void testHybridFullExchangesWithNonBuffersPerChannel() throws Exception {
    final int numRecordsToSend = 10000;
    Configuration configuration = configureHybridOptions(getConfiguration(), false);
    configuration.set(
            NettyShuffleEnvironmentOptions.NETWORK_HYBRID_SHUFFLE_ENABLE_NEW_MODE, false);
    configuration.set(NETWORK_BUFFERS_PER_CHANNEL, 0);
    JobGraph jobGraph = createJobGraph(numRecordsToSend, false, configuration);
    executeJob(jobGraph, configuration, numRecordsToSend);
}