Typescript doesn't work properly for suspense configuration

[3pleFly]

# Bug report

## Description / Observed Behavior
Typescript is not properly inferring the correct type, when suspense is passed as a parameter. It works right when suspense is switch true/false inside the configuration. However it can't infer the types if you pass suspense as a parameter via an intermediate function

What kind of issues did you encounter with SWR?
This forces me to use unnecessary checks, or casting.

## Expected Behavior

How did you expect SWR to behave here?

I expected the types to correctly infer the data type, removing 'undefined' if it receives suspense: true.

## Repro Steps / Code Example
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import useSWR from 'swr';

export const useUser = (suspense: boolean) => {
return useSWR("Key", () => { return new Promise((resolve) => setTimeout(() => resolve("Hello world"), 2500)) }, { suspense })
}

export const useUserWithSuspense = () => {
return useSWR("Key", () => { return new Promise((resolve) => setTimeout(() => resolve("Hello world"), 2500)) }, { suspense: true })
}

const App = () => {

const { data } = useUser(true);
// ^?

const { data } = useUser(false);
// ^?

const { data } = useUserWithSuspense();
// ^?

}