Anonymous reactions override normal reactions with same ID

[dsevillamartin]

Imagine you have two regular reactions in post_reactions with IDs 1, 2 and one anonymous reaction in post_anonymous_reactions with ID 1. If all are for the same post, the API returns all 3 reactions with the singular post_reactions type. This means two of the items have the same ID yet are different objects - one will be missing a user relationship & have a null userId. Since the anonymous reactions come last, the frontend overrides the original post_reaction of ID 1 with the "fake" (anonymous) one, thus making it seem like there are 2 anonymous votes instead of 1. This may break other stuff as well.