（2.0.39 和 2.0.40）JSONObject中的long超长，序列化时导致OOM

### 问题描述

2.0.39和2.0.40 中出现的问题 （2.0.38不存在该问题）
JSONObject中的long超长，如 long var = 1694541292077;
序列化时导致OOM，JSON.toJSONString(jsonObject)
可能出在:
IOUtils.java中 public static int writeInt64(final char[] buf, int pos, final long value) {}

Reproduce the problem with JSONObject and JSON.toJSONString using the long value shown, then inspect IOUtils.java and its writeInt64 method. Compare behavior between 2.0.38 and 2.0.39 or 2.0.40; done means the value serializes correctly without exhausting memory.

Written by the indexing model from the issue text.