title: Symfony 5 / Easy Admin 3 - FormBuilder added field not displaying appropiate input
body: <p>I am building a form using Easy Admin's <code>FormBuilder</code>. My goal is to have an <code>AssociationField</code> which represents a <code>OneToMany</code> relationship, for example, to assign multiple products to a shop. Additionally, I only want some filtered products to be listed, so I overrode the <code>createEditFormBuilder</code> method in the <code>CrudController</code>, I used <a href="https://stackoverflow.com/questions/67003835/easy-admin-3-symfony-4-associationfield-in-onetoone-relationship-shows-already">this question</a> as reference, and this is the code for the overridden function :</p>
  <pre><code>    public function createEditFormBuilder(EntityDto $entityDto, KeyValueStore $formOptions, AdminContext $context): FormBuilderInterface
      {
          $formBuilder = parent::createEditFormBuilder($entityDto, $formOptions, $context);
  
          $filteredProducts = $context-&gt;getEntity()-&gt;getInstance()-&gt;getFilteredProducts();
  
          $formBuilder-&gt;add('products', EntityType::class, ['class' =&gt; 'App\Entity\Product', 'choices' =&gt; $filteredProducts, 'multiple' =&gt; true]);
  
          return $formBuilder;
      }
  </code></pre>
  <p>I expected an Association field as the ones configured in the <code>configureFields()</code> function, however, the displayed field doesn't allow text search or autocomplete features, plus has incorrect height.</p>
  <p>Expected:</p>
  <p><a href="https://i.stack.imgur.com/LyPPp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LyPPp.png" alt="enter image description here" /></a></p>
  <p>Actual:</p>
  <p><a href="https://i.stack.imgur.com/z51MH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/z51MH.png" alt="enter image description here" /></a></p>
  <p>I tried to change the second argument in the <code>$formBuilder-&gt;Add()</code> function, but all specific EasyAdmin types threw errors.</p>
  <p>UPDATE: I also tried using EasyAdmin's <code>CrudFormType</code> instead of <code>EntityType</code>, which doesn't support the 'choice' parameter. Still, the result was the same.</p>