Project-based coordinate viewability should change when project type changes

[kueda]

Currently when you join a traditional project, you can

1. Allow project curators to view your hidden coordinates based on who added the observation to the project using the curator_coordinate_access preference on ProjectUser, and/or
2. Allow project curators to view your hidden coordinates based on an observation-by-observation basis using the curator_coordinate_access on ProjectObservation

When a project changes from a traditional project to a collection or umbrella, the ProjectUser and ProjectObservation records persist (though the latter probably shouldn't) and we are still revealing coordinates based on the ProjectObservation preference. So

• Stop revealing coordinates based on the ProjectObservation preference if the project is not traditional
• Check whether this is happening for the ProjectUser preference and stop that too

Basically the same as inaturalist/inaturalist#3367, but we duplicate that functionality in this app too.