TestAgentIdentification/ws is flaky

[tigrannajaryan]

See https://github.com/open-telemetry/opamp-go/actions/runs/5487663480/jobs/9999430522

I can sometimes reproduce this locally by doing go test -run TestAgentIdentification/ws -race -count 1000

[srikanthccv]

Another case https://github.com/open-telemetry/opamp-go/actions/runs/6248732304/job/16963976273

[tigrannajaryan]

Failed again: https://github.com/open-telemetry/opamp-go/actions/runs/6551109455/job/17791657822?pr=207

[tpaschalis]

I couldn't reproduce any failures even after >40k tries with $ go test -run TestAgentIdentification/ws -race -count 10000 ./.... Also, these old action runs no longer have any logs associated with them.

The TestAgentIdentification case has been made more realistic after #286 and seems stable, so do we think it'd be a good idea to close this issue out?

[tigrannajaryan]

Sounds good to me, let's close. We will reopen if we see the failure again.