Merge branch '5.4' into 6.2

* 5.4:
  Fix some Composer keywords
  [FrameworkBundle] Rename limiter’s `strategy` to `policy` in XSD
  [VarDumper] Fixed dumping of CutStub
  Fix test
  Change limit argument from string to integer.
  [Messenger] Fix `evaluate()` calls in `WorkerTest`
  [Mailer] STDOUT blocks infinitely under Windows when STDERR is filled

Dumper/CliDumper.php

@@ -184,6 +184,9 @@ public function dumpString(Cursor $cursor, string $str, bool $bin, int $cut)
         }
         if ('' === $str) {
             $this->line .= '""';
+            if ($cut) {
+                $this->line .= '…'.$cut;
+            }
             $this->endValue($cursor);
         } else {
             $attr += [

Tests/Dumper/CliDumperTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\VarDumper\Tests\Dumper;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\VarDumper\Caster\CutStub;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 use Symfony\Component\VarDumper\Dumper\AbstractDumper;
 use Symfony\Component\VarDumper\Dumper\CliDumper;
@@ -37,6 +38,11 @@ public function testGet()
             ':stream' => function ($res, $a) {
                 unset($a['uri'], $a['wrapper_data']);
 
+                return $a;
+            },
+            'Symfony\Component\VarDumper\Tests\Fixture\DumbFoo' => function ($foo, $a) {
+                $a['foo'] = new CutStub($a['foo']);
+
                 return $a;
             },
         ]);
@@ -76,7 +82,7 @@ public function testGet()
 %A  options: []
   }
   "obj" => Symfony\Component\VarDumper\Tests\Fixture\DumbFoo {#%d
-    +foo: "foo"
+    +foo: ""…3
     +"bar": "bar"
   }
   "closure" => Closure(\$a, PDO &\$b = null) {#%d