Sui PR normalizes OS socket buffer sizes in simtests

A Sui code change updates simtests to normalize operating-system socket buffer sizes. This aims to make simulated network tests more consistent across environments. The PR description does not specify test results or user-facing changes, and it is a software maintenance update rather than a change to the Sui token or protocol economics.
Neutral
This is a minor engineering update to Sui’s simulated network tests, with no reported change to the protocol, token supply, transaction fees, or user-facing functionality. Normalizing socket buffer sizes across operating systems may reduce test inconsistencies and help developers identify genuine issues more reliably. Similar infrastructure and testing fixes generally have little direct effect on trading unless they accompany a major upgrade, outage, or performance improvement. In the short term, traders are unlikely to react materially. Over the longer term, more consistent testing can support software quality, but this PR alone does not provide a clear catalyst for SUI price or broader market stability.