Change how id's work when there are disagreements

[pisum]

@tchakamaura

In general, if an id tips the category of the ‘higher level’ id / ‘official’ id of the observation, finer ids should be processed ‘given’ this higher-level id, and ids disagreeing with this id ignored unless the higher-level id for the whole observation changes.

this was previously discussed in https://forum.inaturalist.org/t/community-taxon-algorithm-tweaks/28583.

@tchakamaura

it should have the option to be an explicit disagreement to the finer id as well

i think this is effectively what happens now when you explicitly disagree. see: https://forum.inaturalist.org/t/change-to-ancestor-disagreement-implementation/49276/6.