[TypeInfo] Fix handling ConstFetchNode

Author: norkunas

Tests/Extractor/PhpStanExtractorTest.php

@@ -927,7 +927,7 @@ public static function unionTypesProvider(): iterable
             Type::object(ParentDummy::class),
             Type::null(),
         )];
-        yield ['f', null];
+        yield ['f', Type::union(Type::string(), Type::null())];
         yield ['g', Type::array(Type::union(Type::string(), Type::int()))];
     }
 

composer.json

@@ -25,7 +25,7 @@
     "require": {
         "php": ">=8.2",
         "symfony/string": "^6.4|^7.0",
-        "symfony/type-info": "~7.1.9|^7.2.2"
+        "symfony/type-info": "~7.2.8|^7.3.1"
     },
     "require-dev": {
         "symfony/serializer": "^6.4|^7.0",