Timeouts are not recorded to metrics in ClusterNode.ExecuteOp

When timeouts are intercepted in ClusterNode.SendAsync and converted to XXXTimeoutException, they are not recorded to timeout metrics. This is only done if the timeout is handled in RetryOrchestrator, which is much less common.

https://github.com/couchbase/couchbase-net-client/blob/3061be704809b2dc066260035dd2ab88b0613507/src/Couchbase/Core/ClusterNode.cs#L736

This is negatively impacting CenterEdge Software's ability to track down and resolve Capella timeout issues they are experiencing.