Defaulting value is set even when condition is false

[amir707]

Enhancement

As a user/developer, when I click save on schema form I should have the model without any invisible fields

Expected behaviour

I expected model not to have the field with its default when the field is not visible (condition returns false)

Actual behaviour

The model actually has the field with its default value.

Gist/Plunker/Demo

https://plnkr.co/edit/wNvtmtFSgcUtHK2ihfyK?p=preview

@json-schema-form/angular-schema-form-lead

[Anthropic]

@amir707 I wonder if this is related to #741 in some way, I suspect the whole mechanic of setting defaults needs to be re-written to be more stable.