无法监听熔断规则变更后的熔断器状态变换事件！！！

resource对应的熔断规则变更后，对应resource将会生成一个新的CircuitBreaker，熔断状态为CLOSE。

从resource角度看，之前resource的任意熔断状态，都将直接被重置成了CLOSE状态，此时其实是可能有状态变更的，但是不会触发熔断器状态变换事件。

Start by tracing how a resource's circuit-breaker rules are updated and how the replacement CircuitBreaker is created. Check where circuit state transition events are dispatched, especially when the previous state is reset to CLOSE. Done means a state change caused by a rule update can be observed through the circuit-breaker state transition event mechanism.

Written by the indexing model from the issue text.