Fix OperationParams typing

### Steps to Reproduce

```ts
export declare type OperationParams<Path = unknown, Query = unknown, Body = unknown> = {
    path?: Path;
    query?: Query;
    body?: Body;
    options?: {
        signal?: AbortSignal;
    };
};

Remove the `?` and pass `TPath` as `TPath = any | undefined` instead, same for query and body.