refactor(form-builder): pre-publish check reads form_field_bindings; drop binding JSON columns

api/tests/Feature/FormBuilder/Purposes/PurposeSchemaLifecycleTest.php

@@ -148,12 +148,13 @@ final class PurposeSchemaLifecycleTest extends TestCase
 
     private function addBindingField(FormSchema $schema, string $entity, string $column, string $slug): FormField
     {
-        return FormField::factory()->create([
-            'form_schema_id' => $schema->id,
-            'field_type' => FormFieldType::TEXT,
-            'slug' => $slug,
-            'label' => ucfirst($slug),
-            'binding' => ['mode' => 'entity_owned', 'entity' => $entity, 'column' => $column],
-        ]);
+        return FormField::factory()
+            ->withEntityBinding($entity, $column)
+            ->create([
+                'form_schema_id' => $schema->id,
+                'field_type' => FormFieldType::TEXT,
+                'slug' => $slug,
+                'label' => ucfirst($slug),
+            ]);
     }
 }