[QUESTION]

### fastjson2竟然能够解析Gson的@SerializedName
fastjson 1.X表现正常没有解析Gson的@SerializedName，2.X就莫名其妙能解析了。
你识别Gson的注解也行，你默认关闭呀，真是脑瘫设计，完全不考虑使用者的场景。

Reproduce the reported difference between fastjson 1.X and 2.X when parsing Gson's @SerializedName annotation, then trace where annotation recognition is handled. Determine whether the behavior is intentional and what configuration or default behavior the issue expects; completion should include a clear, tested decision about Gson annotation support.

Written by the indexing model from the issue text.