数组类型转json字符串设置WriteClassName后反序列化失败

[ra1nz]

What this PR does / why we need it?

使用JSON.toJSONString将一个数组类型转换为JSON字符串，如果设置了WriteClassName
String jsonString = JSON.toJSONString(new Object[]{1, 2, 3}, SerializerFeature.WriteClassName);
输出结果为
{"@type":"[O", "@value":"[1,2,3]"}
这会导致反序列化失败或结果错误

Summary of your change

ObjectReaderImplObject第106行应判断contextClass是否为null，为null时不更改autoTypeObjectReader类型

Please indicate you've done the following:

• Made sure tests are passing and test coverage is added if needed.
• Made sure commit message follow the rule of Conventional Commits specification.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed.

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❌ ra1nz
❌ zhengshiyu1

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[wenshao]

请签署CLA

[ra1nz]

请签署CLA

已在cla-assistant.io完成签署

[wenshao]

请在本地执行mvn validate修复codestyle相关的问题

[ra1nz]

请在本地执行mvn validate修复codestyle相关的问题

已修复