### Environment

* Dubbo version: 2.7.15


### Steps to reproduce this issue

Dubbo一致性Hash loadbalance存在缺陷，会导致CPU100%

Due to a defect in the hash load balance of Dubbo consistency, the CPU usage is 100%.

public class ConsistentHashLoadBalanceTest extends LoadBalanceBaseTest {
    @Test
    public void testConsistentHashLoadBalance() {
        int runs = 10000;
        Map<Invoker, AtomicLong> counter = getInvokeCounter(runs, ConsistentHashLoadBalance.NAME);
        double overloadRatioAllowed = 1.5F;
        int serverCount = counter.size();
        double overloadThread = ((double) runs * overloadRatioAllowed)/((double) serverCount);
        for (Invoker invoker : counter.keySet()) {
            Long count = counter.get(invoker).get();
            Assertions.assertTrue(count < (overloadThread + 1L),
                "count of request accept by each invoker will not be higher than (overloadRatioAllowed * average + 1)");
        }
    }
    
    @Test
    void testNormalWhenRouterEnabled() {
        ConsistentHashLoadBalance lb = (ConsistentHashLoadBalance) getLoadBalance(ConsistentHashLoadBalance.NAME);
        URL url = invokers.get(0).getUrl();
        RouterChain<LoadBalanceBaseTest> routerChain = RouterChain.buildChain(LoadBalanceBaseTest.class, url);
        Invoker<LoadBalanceBaseTest> result = lb.select(invokers, url, invocation);
        int originalHashCode = lb.getCorrespondingHashCode(invokers);
        for (int i = 0; i < 100; i++) {
            routerChain.setInvokers(new BitList<>(invokers));
            List<Invoker<LoadBalanceBaseTest>> routeInvokers = routerChain.route(url, new BitList<>(invokers), invocation);
            Assertions.assertEquals(originalHashCode, lb.getCorrespondingHashCode(routeInvokers));
        }
    }
}