in case of presta_self_init_and_eval, disable prestataire by default at creation

src/Admin/PrestataireAdmin.php

@@ -354,10 +354,20 @@ class PrestataireAdmin extends AbstractAdmin
             ->end()
         ;
 
+        /** 
+         * In case of prestataire self init and evaluation use case activated,
+         * set prestataire disabled by default & add 'conventionnement' field.
+         */
         if ($this->getConfigurationPool()->getContainer()->getParameter('presta_self_init_and_eval')) {
             $formMapper
                 ->tab('Prestataire')
                     ->with('Prestataire', ['class' => 'col-md-6'])
+                        ->remove('enabled')
+                        ->add('enabled', null, [
+                            'label' => 'Activé ?',
+                            'required' => false,
+                            'data' => false
+                        ])
                         ->add('conventionnement', ChoiceType::class, [
                             'choices' => [
                                 '50 %' => 0.5,