Merge branch '7.4' into 8.0

* 7.4:
  [HttpClient] Fix caching client decorating scoping client
  [DownCralwer] Fix inline type info
  [FrameworkBundle] Add missing `container.excluded` to `serializer.attribute_metadata`
  [DomCrawler] Fix converting HTML5 trees to DOM nodes
  [VarDumper] Fix dumping CurlHttpClient instances
  [DomCrawler] Properly ignore errors when using the native HTML5 parser
  [Validator] Correct PHPDoc for Collection constructor

Author: nicolas-grekas

Caster/SymfonyCaster.php

@@ -52,7 +52,7 @@ public static function castRequest(Request $request, array $a, Stub $stub, bool
     public static function castHttpClient($client, array $a, Stub $stub, bool $isNested): array
     {
         $multiKey = \sprintf("\0%s\0multi", $client::class);
-        if (isset($a[$multiKey])) {
+        if (isset($a[$multiKey]) && !$a[$multiKey] instanceof Stub) {
             $a[$multiKey] = new CutStub($a[$multiKey]);
         }