Object ownership: Invalid mutation for Linked class when using `set/getContext`

[henrykrinkle01]

Describe the bug

This is a follow-up of the issue #15164, which has been fixed by the PR #15166.
I have a Linked class and a linked function which does the same thing.
Both objects created by the class and the function are passed to a child component using the context API.
In the child component, mutating the object created by the class produces an ownership_invalid_mutation warning while the function version is fine.

Reproduction

https://svelte.dev/playground/ccf69c3f620a402eadb39b0715a5976b?version=5.23.0

Logs

System Info

N/A

Severity

annoyance

[dummdidumm]

The problem is that we're not adding private state/derived declarations to the ADD_OWNERS symbol method