bug #1775 #1770 [Autocomplete] Ignore the ExtraLazyChoiceLoader if the parent $loader is null (vesselind)

This PR was merged into the 2.x branch.

Discussion
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#1770 [Autocomplete] Ignore the ExtraLazyChoiceLoader if the parent $loader is null

| Q             | A
| ------------- | ---
| Bug fix?      | yes/no
| New feature?  | no
| Issues        | Fix #1770
| License       | MIT

When a custom autoload field class is created and `choices` option is passed, an error occurs: `Symfony\UX\Autocomplete\Form\ChoiceList\Loader\ExtraLazyChoiceLoader::__construct(): Argument #1 ($decorated) must be of type Symfony\Component\Form\ChoiceList\Loader\ChoiceLoaderInterface, null given`.

This should fix the problem, described in #1770.

Commits
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28af7fc #1770 ignore the ExtraLazyChoiceLoader if the parent $loader is null

Author: kbond

src/Autocomplete/src/Form/BaseEntityAutocompleteType.php

@@ -38,6 +38,10 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
     public function configureOptions(OptionsResolver $resolver): void
     {
         $choiceLoader = static function (Options $options, $loader) {
+            if (null === $loader) {
+                return null;
+            }
+            
             return new ExtraLazyChoiceLoader($loader);
         };