Merge branch '4.4' into 5.2

* 4.4:
  [Config] Backport type declarations
  [VarExporter] Fix test on PHP 8.1
  [DependencyInjection] Fix CSV file mime type guess test for PHP 8.1

Author: derrabus

Tests/InstantiatorTest.php

@@ -55,7 +55,10 @@ public function testInstantiate()
             "\0".__NAMESPACE__."\Foo\0priv" => 234,
         ];
 
-        $this->assertSame($expected, (array) Instantiator::instantiate(Bar::class, ['priv' => 123], [Foo::class => ['priv' => 234]]));
+        $actual = (array) Instantiator::instantiate(Bar::class, ['priv' => 123], [Foo::class => ['priv' => 234]]);
+        ksort($actual);
+
+        $this->assertSame($expected, $actual);
 
         $e = Instantiator::instantiate('Exception', ['foo' => 123, 'trace' => [234]]);