Mutation option callbacks are not firing if mutation is not mounted

[jljorgenson18]

We are currently migrating our business logic to Jotai and we are seeing an issue where creating a mutation atom and only calling it from inside of a write atom is causing the mutation callbacks to not fire.

If you have atoms like this

const someMutationAtom = atomWithMutation((get) => {
  return {
    mutationFn: fakeMutationCall,
  };
});

const fakePublishAtom = atom(null, async (get, set) => {
  await get(someMutationAtom).mutateAsync(undefined, {
    onSuccess: () => {
      set(publishCountAtom, (prev) => prev + 1);
    },
  });
});

Then onSuccess will not fire unless someMutationAtom is mounted somewhere. I believe internally there is a listener attached to the mutation observer while mounted and I would expect that listener to be active while a query is occurring.

I should add that passing options into the atomWithMutation callback are working just fine. However, there are many cases where we want to custom options on a mutation by mutation basis.

See https://codesandbox.io/p/sandbox/jotai-react-query-repro-forked-99trmz for an example. If you comment in the mutation hook, it starts working.