Added x-data with blank required input fields should make the content invalid

[sgauruseu]

1. Specify the required text area in x-data

   <?xml version="1.0" encoding="UTF-8"?>
   <x-data xmlns="urn:enonic:xp:model:1.0">
   <display-name>Text Area x-data</display-name>
   <form>
    <input name="textarea" type="TextArea">
     <label>Text Area</label>
     <occurrences minimum="1" maximum="1"/>
   </input>
   </form>
   </x-data>

2. Specify this x-data in site.xml for double content, for example

3. Open new wizard with this x-data

4. Fill in the display name input - this content gets valid - OK

5. Click on enable x-data

BUG: This content should be not valid after enabled x-data with required input

[alansemenov]

@ashklianko most likely after https://github.com/enonic/app-contentstudio/issues/2928. the content should get validated after adding x-data but invalid fields inside x-data form should not get invalid highlighting until the content is saved or reopened.