Add integration test for "type" prop changes

[kettanaito]

What

Need to add integration test for the change of the 'type" prop of a field.

Why

The "type" prop has a subscription that reflects its changes in a field's state. This must be tested.

How

• Make sure the subscription works with the new event handling system
• Create an integration test that toggles a field's "type", and assert the type in the state