Fix attribute nesting on anonymous components (#36240)

* fix attribute nesting

* Apply fixes from StyleCI (#36239)

* add test

* adjust order

src/Illuminate/View/AnonymousComponent.php

@@ -50,6 +50,11 @@ public function data()
     {
         $this->attributes = $this->attributes ?: $this->newAttributeBag();
 
-        return $this->data + ['attributes' => $this->attributes];
+        return array_merge(
+            optional($this->data['attributes'] ?? null)->getAttributes() ?: [],
+            $this->attributes->getAttributes(),
+            $this->data,
+            ['attributes' => $this->attributes]
+        );
     }
 }

tests/Integration/View/BladeTest.php

@@ -69,6 +69,13 @@ public function test_appendable_attributes()
 </div>', trim($view));
     }
 
+    public function tested_nested_anonymous_attribute_proxying_works_correctly()
+    {
+        $view = View::make('uses-child-input')->render();
+
+        $this->assertSame('<input class="disabled-class" foo="bar" type="text" disabled />', trim($view));
+    }
+
     protected function getEnvironmentSetUp($app)
     {
         $app['config']->set('view.paths', [__DIR__.'/templates']);

tests/Integration/View/templates/components/base-input.blade.php

@@ -0,0 +1,11 @@
+@props(['disabled' => false])
+
+@php
+if ($disabled) {
+    $class = 'disabled-class';
+} else {
+    $class = 'not-disabled-class';
+}
+@endphp
+
+<input {{ $attributes->merge(['class' => $class]) }} {{ $disabled ? 'disabled' : '' }} />

tests/Integration/View/templates/components/child-input.blade.php

@@ -0,0 +1 @@
+<x-base-input foo="bar" :attributes="$attributes" />

tests/Integration/View/templates/uses-child-input.blade.php

@@ -0,0 +1 @@
+<x-child-input type="text" :disabled="true" />