Schema validation errors broken since alpha 940

[janpio]

In alpha 940 the schema validation errors broke.

Before:

Error: Schema parsing	
error: Argument "value" is missing in attribute "@default".	
  -->  schema.prisma:228	
   | 	
227 |   user_email                   String                      @default("")	
228 |   user_email_valid             copp_users_user_email_valid @default()	
   | 	

Validation Error Count: 1

Now:

Error: Schema parsing
Error in data model: [DirectiveArgumentNotFound { argument_name: "value", directive_name: "default", span: Span { start: 7211, end: 7220 } }]

(Example is for a model that has a field with a @default() (Where there is no string inside which is invalid)

2.0.0-alpha.939...2.0.0-alpha.940

[Jolg42]

Test added in prisma2 as well prisma/prisma@3857c5c