Update types.ts

[yonatan2703]

Add undefined to possible cursor types in UseTRPCInfiniteQueryResult

The type definition of UseTRPCInfiniteQueryResult currently doesn't account for undefined as a possible cursor type, which can cause type inference issues when working with routes that can be used with both useQuery and useInfiniteQuery.

This PR adds undefined as a possible type for the cursor in the InfiniteData generic type parameter.

Closes #

🎯 Changes

• Updates the type definition of UseTRPCInfiniteQueryResult to include undefined as a possible cursor type
• This is a bug fix that improves type inference when working with dual-purpose routes (routes that can be used with both useQuery and useInfiniteQuery)

Before:

export type UseTRPCInfiniteQueryResult<TData, TError, TInput> = TRPCHookResult &
  UseInfiniteQueryResult
    InfiniteData<TData, NonNullable<ExtractCursorType<TInput>> | null>,
    TError
  >;

After:

export type UseTRPCInfiniteQueryResult<TData, TError, TInput> = TRPCHookResult &
UseInfiniteQueryResult
  InfiniteData<TData, NonNullable<ExtractCursorType<TInput>> | null | undefined>,
  TError
>;

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commit: a1f3489

[KATT]

Please add a failing test so we don't break this in the future