cacheOrchestratorStake not immediately returning upon timeout

[yondonfu]

Describe the bug
A clear and concise description of what the bug is.

The cachOrchestratorStake function used to fetch the stake of orchs during discovery has a minor bug with how timeouts are handled.

Note that how we handle timeouts in [1] has a minor bug: the break applies to the innermost select (a weird design choice by golang IMO), and what happens is we may actually end up looping and hitting case <-ctx.Done() a few times until breaking out of the for-loop.

Expected behavior
A clear and concise description of what you expected to happen.

If a time out occurs the function should immediately return.