Read Stream always return error on cluster rebalance

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In a cluster mode setup of EventStoreDB, when the leader node of the cluster drops and we attempt to use ReadStream method, it raises an error and doesn’t rebalance with the updated cluster members.

This issue occurs here: https://github.com/EventStore/EventStore-Client-Go/blob/8206ac84067e5a6d591f71fafb82758015fb9f3c/esdb/client.go#L291

If we call ReadStream again, it fails repeatedly because client.grpcClient.handleError is not invoked in case of an error, which prevents the reconnection process from being triggered.

Here’s a suggested solution #188

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@YoEight thanks for your support