Inventory dataset form: can't change resource type

On the existing resource, if you change the resource type, it appears saved but when you reload the resources, the type is not changed.

## How to reproduce

- Add a resource to a dataset with resource type "Link to an API"
- then edit the resource and change the type to "Access URL" and save
- reload the dataset and resource

## Expected behavior

the type should be "Access URL"

## Actual behavior

the type stays as "Link to an API"

## Sketch

Workaround is delete the resource and add it again.