[PropertyInfo] Support for the mixed type.

Author: derrabus

src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php

@@ -243,7 +243,7 @@ private function extractFromReflectionType(\ReflectionType $reflectionType, \Ref
 
         foreach ($reflectionType instanceof \ReflectionUnionType ? $reflectionType->getTypes() : [$reflectionType] as $type) {
             $phpTypeOrClass = $reflectionType instanceof \ReflectionNamedType ? $reflectionType->getName() : (string) $type;
-            if ('null' === $phpTypeOrClass) {
+            if ('null' === $phpTypeOrClass || 'mixed' === $phpTypeOrClass) {
                 continue;
             }
 

src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php

@@ -221,6 +221,8 @@ public function php80TypesProvider()
             ['timeout', [new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_FLOAT)]],
             ['optional', [new Type(Type::BUILTIN_TYPE_INT, true), new Type(Type::BUILTIN_TYPE_FLOAT, true)]],
             ['string', [new Type(Type::BUILTIN_TYPE_OBJECT, false, 'Stringable'), new Type(Type::BUILTIN_TYPE_STRING)]],
+            ['payload', null],
+            ['data', null],
         ];
     }
 

src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php80Dummy.php

@@ -23,4 +23,12 @@ public function getOptional(): int|float|null
     public function setString(string|\Stringable $string)
     {
     }
+
+    public function setPayload(mixed $payload)
+    {
+    }
+
+    public function getData(): mixed
+    {
+    }
 }