When adding a mutation dynamically via "setMutator", all fields with the same name across all stores have the mutation applied

[pappascd81]

Environment

Playground.

Reproduction

Playground link.

Describe the bug

Found another bug unless I am specifying the key incorrectly or using this incorrectly. I have a use case for needing to set a mutation dynamically on a store. However, when attempting to do so via StoreClass.setMutator(field, mutation), all fields with the same name in other stores have their values mutated as well.

I used the base example again, but added 'title' to the User class and set a Mutator just before useRepo is called. When viewing the Todo list of a User, you can see their titles affected as well.

Additional context

No response

Logs