Fix disabled-coin stale-share cutoff regression

[MoneroOcean]

Motivation

• Revert a regression that increased the disabled-coin stale-template acceptance window from 10*60*1000 to 60*60*1000, which enlarged the time miners could be credited for shares against a disabled coin and therefore risked diluting PPLNS payouts.

Description

• Restore the disabled-coin active-template cutoff in getSubmitBlockTemplate by changing the guard in lib/pool/protocol.js from 60 * 60 * 1000 back to 10 * 60 * 1000, so submissions against a disabled coin are rejected after 10 minutes.

Testing

• Attempted to run the automated test suite with npm test --silent, but the test harness could not run in this environment due to a missing dependency (protocol-buffers), so no test failures related to this small change were observed.

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Codex Task