Apply fixes from StyleCI (#28864)

Author: GrahamCampbell

src/Illuminate/Database/Eloquent/Builder.php

@@ -913,7 +913,7 @@ public function applyScopes()
                 continue;
             }
 
-            $builder->callScope(function (Builder $builder) use ($scope) {
+            $builder->callScope(function (self $builder) use ($scope) {
                 // If the scope is a Closure we will just go ahead and call the scope with the
                 // builder instance. The "callScope" method will properly group the clauses
                 // that are added to this query so "where" clauses maintain proper logic.

src/Illuminate/Foundation/Application.php

@@ -1106,7 +1106,7 @@ public function isLocale($locale)
     public function registerCoreContainerAliases()
     {
         foreach ([
-            'app'                  => [\Illuminate\Foundation\Application::class, \Illuminate\Contracts\Container\Container::class, \Illuminate\Contracts\Foundation\Application::class,  \Psr\Container\ContainerInterface::class],
+            'app'                  => [self::class, \Illuminate\Contracts\Container\Container::class, \Illuminate\Contracts\Foundation\Application::class,  \Psr\Container\ContainerInterface::class],
             'auth'                 => [\Illuminate\Auth\AuthManager::class, \Illuminate\Contracts\Auth\Factory::class],
             'auth.driver'          => [\Illuminate\Contracts\Auth\Guard::class],
             'blade.compiler'       => [\Illuminate\View\Compilers\BladeCompiler::class],

tests/Integration/Foundation/FoundationHelpersTest.php

@@ -8,7 +8,7 @@
 /**
  * @group integration
  */
-class HelpersTest extends TestCase
+class FoundationHelpersTest extends TestCase
 {
     public function test_rescue()
     {