fix: 对于嵌套的模型列表，会丢失数组的key

Author: hsldymq

README.md

@@ -152,7 +152,7 @@ $data = [
           "name" => "Alice",
           "age" => 8,
         ],
-        [
+        's' => [
           "name" => "Bob",
           "age" => 10,
         ]
@@ -199,6 +199,7 @@ $info = new Info($data);
 
 assert(count($info->studentList) === 2);
 assert($info->studentList[0]->name === 'Alice');
+assert($info->studentList['s']->name === 'Bob');
 assert($info->school->name === 'xxx');
 ```
 

src/Converters/ModelListConverter.php

@@ -26,12 +26,12 @@ public function convert(mixed $fieldValue, Property $property): array
         }
 
         $result = [];
-        foreach ($fieldValue as $each) {
+        foreach ($fieldValue as $key => $each) {
             if (!is_array($each)) {
                 throw new TypeError("the element of {$property->getBoundFieldName()} should be a type of array");
             }
 
-            $result[] = new $this->modelClass($each);
+            $result[$key] = new $this->modelClass($each);
         }
 
         return $result;

tests/ModelConverterTest.php

@@ -26,7 +26,7 @@ public function testRecursiveDataModel()
                         ['field' => 3],
                         ['field' => 4],
                     ],
-                ]
+                ],
             ],
         ]);
 
@@ -40,6 +40,33 @@ public function testRecursiveDataModel()
         $this->assertEquals(3, $model->outerList[1]->innerList[0]->val);
         $this->assertEquals(4, $model->outerList[1]->innerList[1]->val);
 
+
+        $model = new EmbedDataListModel([
+            'outers' => [
+                'outer1' => [
+                    'inners' => [
+                        'inner1_a' => ['field' => 1],
+                        'inner1_b' => ['field' => 2],
+                    ],
+                ],
+                'outer2' => [
+                    'inners' => [
+                        'inner2_a' => ['field' => 3],
+                        'inner2_b' => ['field' => 4],
+                    ],
+                ],
+            ],
+        ]);
+        $this->assertCount(2, $model->outerList);
+
+        $this->assertCount(2, $model->outerList['outer1']->innerList);
+        $this->assertEquals(1, $model->outerList['outer1']->innerList['inner1_a']->val);
+        $this->assertEquals(2, $model->outerList['outer1']->innerList['inner1_b']->val);
+
+        $this->assertCount(2, $model->outerList['outer2']->innerList);
+        $this->assertEquals(3, $model->outerList['outer2']->innerList['inner2_a']->val);
+        $this->assertEquals(4, $model->outerList['outer2']->innerList['inner2_b']->val);
+
     }
 
     public function testInvalidFieldType_ExpectError()