[Bug] Pipeline Unwatch returns error. Incorrect handling of result

[alexyarovoy]

Fred version - 10.1.0
Redis version - 6.2.6
Platform - linux
Deployment type - centralized

"unwatch()" called on pipeline returns error "Expected OK, found Queued."
Looks like protocol::utils::expect_ok expects string response to be "OK" or "QUEUED" and returns errors otherwise. As string response is "Queued" (not all uppercase) it returns error.

To Reproduce
Steps to reproduce the behavior:

let pipeline = client.pipeline();
pipeline.unwatch().await?; // we receive error here