Fix for the use of built-in class names in Collection annotations

src/Support/Annotations/DataIterableAnnotationReader.php

@@ -170,19 +170,19 @@ protected function resolveDataClass(
             ];
         }
 
-        if (class_exists($class)) {
+        $fcqn = $this->resolveFcqn($reflection, $class);
+
+        if (is_subclass_of($fcqn, BaseData::class)) {
             return [
-                'type' => $class,
-                'isData' => false,
+                'type' => $fcqn,
+                'isData' => true,
             ];
         }
 
-        $class = $this->resolveFcqn($reflection, $class);
-
-        if (is_subclass_of($class, BaseData::class)) {
+        if (class_exists($fcqn)) {
             return [
-                'type' => $class,
-                'isData' => true,
+                'type' => $fcqn,
+                'isData' => false,
             ];
         }
 

tests/Fakes/CollectionNonDataAnnotationsData.php

@@ -55,6 +55,9 @@ class CollectionNonDataAnnotationsData
 
     public array $propertyO;
 
+    /** @var \Illuminate\Support\Collection<Error> */
+    public Collection $propertyP;
+
     /**
      * @param \Spatie\LaravelData\Tests\Fakes\Enums\DummyBackedEnum[]|null $paramA
      * @param null|\Spatie\LaravelData\Tests\Fakes\Enums\DummyBackedEnum[] $paramB

tests/Fakes/Error.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Spatie\LaravelData\Tests\Fakes;
+
+use Spatie\LaravelData\Data;
+
+class Error extends Data
+{
+}

tests/Support/Annotations/DataIterableAnnotationReaderTest.php

@@ -6,6 +6,7 @@
 use Spatie\LaravelData\Tests\Fakes\CollectionDataAnnotationsData;
 use Spatie\LaravelData\Tests\Fakes\CollectionNonDataAnnotationsData;
 use Spatie\LaravelData\Tests\Fakes\Enums\DummyBackedEnum;
+use Spatie\LaravelData\Tests\Fakes\Error;
 use Spatie\LaravelData\Tests\Fakes\SimpleData;
 
 it(
@@ -179,6 +180,11 @@ function (string $property, ?DataIterableAnnotation $expected) {
         'property' => 'propertyL',
         'expected' => new DataIterableAnnotation(DummyBackedEnum::class, isData: false),
     ];
+
+    yield 'propertyP' => [
+        'property' => 'propertyP',
+        'expected' => new DataIterableAnnotation(Error::class, isData: true),
+    ];
 });
 
 it('can get the iterable class for a collection by class annotation', function () {