声明initialData，data的值应当不再有undefined

[Preyou]

Description

目前useRequestResult的data的类型始终为Readonly<Ref<TData | undefined>>，当提供了initialData后，data的类型签名应该改为Readonly<Ref<TData | typeof initialData>>。

Suggested solution

将useRequestResult['data']的签名由Readonly<Ref<TData | undefined>>，改为Readonly<Ref<TData | typeof initialData>>

Alternative

No response

Additional context

No response

Validations

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[XiaoDaiGua-Ray]

是个不错的建议。会在后续版本优化对于 data 的签名。