Query timeout with callback never emits 'error' #3812

client.query({ text, query_timeout }, cb) + query.on('error'): timeout only reaches cb, event never fires. Success path does both (cb + 'end').

Query.handleError is callback-xor-emit by design (locked by query-error-handling-prepared-statement-tests.js), so blind dual-emit (#3811) breaks back-compat.