fix: update snapshot for SSE endpoint additionalProperties test

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bilby91

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/transformers-additional-properties/client/types.gen.ts

@@ -152,7 +152,7 @@ type SseFn = <
   ThrowOnError extends boolean = false,
   TResponseStyle extends ResponseStyle = 'fields',
 >(
-  options: Omit<RequestOptions<TData, TResponseStyle, ThrowOnError>, 'method'>,
+  options: Omit<RequestOptions<never, TResponseStyle, ThrowOnError>, 'method'>,
 ) => Promise<ServerSentEventsResult<TData, TError>>;
 
 type RequestFn = <