alibaba / alibaba/fastjson2

[BUG]fastjson2和fastjson1 java对象int值越界时行为不一致

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bug
Dominant language
Java
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Description

### 问题描述
fastjson2 java类字段定义为int时,json中的数据为负数且小于Integer.MIN_VALUE 大于Long.MIN_VALUE,不会解析失败
fastjson1 java类字段定义为int时,json中的数据为负数且小于Integer.MIN_VALUE 大于Long.MIN_VALUE,解析失败,抛异常

### 环境信息
*请填写以下信息:*
- 版本信息:Fastjson2 2.0.52

### 重现步骤
*如何操作可以重现该问题:*

1. 使用 `xxx.xxx` 方法
2. 输入 `...` 数据
3. 出现 `...` 错误
```java
//可在此输入示例代码
```

### 期待的正确结果
*对您期望发生的结果进行清晰简洁的描述。*

### 相关日志输出
*请复制并粘贴任何相关的日志输出。*

#### 附加信息
*如果你还有其他需要提供的信息,可以在这里填写(可以提供截图、视频等)。*

Contributor guide

Open the contributing guide

Research direction

The report concerns Java int deserialization in Fastjson2 2.0.52 compared with fastjson1, but it provides no concrete method, input, file, or test and leaves the expected result blank. First create a minimal reproduction for a negative value below Integer.MIN_VALUE, then locate the existing numeric-deserialization tests and confirm the intended overflow behavior before adding a regression test.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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