Fix error type inference with conditional queries

Uncommented the error type assertion that was marked as TODO. The error type inference now works correctly, likely due to the queryKey reactive changes in PR #71.

The test now properly verifies that error.value has type 'false | null' when using conditional queries with SKIP token and select option.

Closes #69

Author: hirotaka

packages/openapi-vue-query/test/index.test.tsx

@@ -195,8 +195,7 @@ describe("client", () => {
       );
 
       expectTypeOf(result.data.value).toEqualTypeOf<"select(true)" | undefined>();
-      // TODO: fix this
-      // expectTypeOf(result.error.value).toEqualTypeOf<false | null>();
+      expectTypeOf(result.error.value).toEqualTypeOf<false | null>();
     });
 
     it("returns query options without an init", async () => {