Removed semi-automated and incorrect validation error handling in the From Builder.

[SG-Noxoreos]

Description

Whenever any form element was changed, the Form Builder simply cleared out the error messages in the affected form elements. This interfered with the validationErrors prop that is given from outside.
Because of the semi-automated handling it was not possible to use the same validation error while the element is changed.
Now because the Form Builder is not the one creating the validation errors, it should leave removal to the parent component as well and only notify it, when any form actions created new validation errors.

Type of change

• Bug Fix 🐛 (non-breaking change which fixes an issue)
• Enhancement 🚀 (non-breaking change which adds functionality)
• Breaking Change 💥 (fix or feature that would cause existing functionality to not work as expected)
• Polish 💅 (Just some cleanups)
• Internal 🏠 Only relates to internal processes.

How to test it

Create a new form using the Form Builder and pass in validation errors. They should now only change, when the prop to the Form Builder changes and it should immediately be visible when this prop is changed. The handleChange prop now gets a third param with new validation errors, but as of right now no validation actions exist, yet, so this param will be an empty array.