Views referencing taxonomy terms in their configuration now reference the UUID

To support the model of deployable configuration, Views configuration with filters on taxonomy terms (or any entity reference field for that matter) should use the UUID of the entity chosen.

For example, creating a view which has a filter on a term from a node field should export to configuration with UUID filter values rather than taxonomy term entity IDs.

For the editor experience as well as visitor experience, there is no change, only the configuration is changed. Modules having test views should also apply this update hook to their test views.