docs: add changelog for PR 11975

changes/ce/fix-11975.en.md

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+Resolve redundant error logging on socket closure
+
+Addressed a race condition causing duplicate error logs when a socket is closed by both a peer and the server.
+Dual socket close events from the OS and EMQX previously led to excessive error logging.
+The fix improves event handling to avoid redundant error-level logging.