Inconsistent `select` behaviour for non-enumerable / symbol properties.

[ycmjason]

Describe the bug

When select returns an object with non-enumerable / symbol keys, those entries are dropped after queryClient.setQueryData is called,, but not at initial query.

Your minimal, reproducible example

https://stackblitz.com/edit/vitejs-vite-7n6ndech?file=src%2FApp.tsx

Steps to reproduce

1. Go to stackblitz example
2. Observe that result.data.hidden is set to result.data.x as expected:

   result.data.x: INITIAL_VALUE
   result.data.y: INITIAL_VALUE
   result.data.hidden: INITIAL_VALUE
   result.data[S(Symbol)]: INITIAL_VALUE
   

3. Click SET QUERY DATA button
4. Observe that result.data.hidden is now undefined:

   result.data.x: UPDATED_VALUE
   result.data.y: UPDATED_VALUE
   result.data.hidden: undefined
   result.data[S(Symbol)]: undefined
   

Expected behavior

I expect select will bahave consistently regardless of how the underlying data is set.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

• OS: Mac
• Browser: Chrome

Tanstack Query adapter

react-query

TanStack Query version

^5.90.2

TypeScript version

No response

Additional context

No response