Merge branch '5.0' into 5.1

* 5.0:
  [DependencyInjection][CheckTypeDeclarationsPass] Handle unresolved parameters pointing to environment variables
  switch the context when validating nested forms
  remove unused param from validator service config
  Fix typo
  [HttpKernel] Fix regression where Store does not return response body correctly
  rework form validator tests
  Update AbstractController.php

Compiler/CheckTypeDeclarationsPass.php

@@ -199,7 +199,9 @@ private function checkType(Definition $checkedDefinition, $value, \ReflectionPar
         } elseif (\is_string($value)) {
             if ('%' === ($value[0] ?? '') && preg_match('/^%([^%]+)%$/', $value, $match)) {
                 $value = $this->container->getParameter(substr($value, 1, -1));
-            } elseif ($envPlaceholderUniquePrefix && false !== strpos($value, 'env_')) {
+            }
+
+            if ($envPlaceholderUniquePrefix && \is_string($value) && false !== strpos($value, 'env_')) {
                 // If the value is an env placeholder that is either mixed with a string or with another env placeholder, then its resolved value will always be a string, so we don't need to resolve it.
                 // We don't need to change the value because it is already a string.
                 if ('' === preg_replace('/'.$envPlaceholderUniquePrefix.'_\w+_[a-f0-9]{32}/U', '', $value, -1, $c) && 1 === $c) {

Tests/Compiler/CheckTypeDeclarationsPassTest.php

@@ -780,17 +780,27 @@ public function testExpressionLanguageWithSyntheticService()
 
     public function testProcessResolveParameters()
     {
-        $container = new ContainerBuilder();
+        putenv('ARRAY={"foo":"bar"}');
+
+        $container = new ContainerBuilder(new EnvPlaceholderParameterBag([
+            'env_array_param' => '%env(json:ARRAY)%',
+        ]));
         $container->setParameter('array_param', ['foobar']);
         $container->setParameter('string_param', 'ccc');
 
-        $container
-            ->register('foobar', BarMethodCall::class)
+        $definition = $container->register('foobar', BarMethodCall::class);
+        $definition
             ->addMethodCall('setArray', ['%array_param%'])
             ->addMethodCall('setString', ['%string_param%']);
 
+        (new ResolveParameterPlaceHoldersPass())->process($container);
+
+        $definition->addMethodCall('setArray', ['%env_array_param%']);
+
         (new CheckTypeDeclarationsPass(true))->process($container);
 
         $this->addToAssertionCount(1);
+
+        putenv('ARRAY=');
     }
 }