fix new errors reported by phpstan

Author: JanTvrdik

src/Compiler/MapperFactory/DefaultMapperCompilerFactory.php

@@ -218,7 +218,7 @@ protected function createInner(TypeNode $type, array $options): MapperCompiler
      */
     protected function createObjectMapperCompiler(string $inputClassName, array $options): MapperCompiler
     {
-        $classLikeNames = [$inputClassName => true] + class_parents($inputClassName) + class_implements($inputClassName);
+        $classLikeNames = [$inputClassName => true, ...class_parents($inputClassName), ...class_implements($inputClassName)];
 
         foreach ($classLikeNames as $classLikeName => $_) {
             if (isset($this->mapperCompilerFactories[$classLikeName])) {

src/Runtime/MapperProvider.php

@@ -82,7 +82,7 @@ public function registerFactory(string $inputClassName, callable $mapperFactory)
      */
     private function create(string $inputClassName): Mapper
     {
-        $classLikeNames = [$inputClassName => true] + class_parents($inputClassName) + class_implements($inputClassName);
+        $classLikeNames = [$inputClassName => true, ...class_parents($inputClassName), ...class_implements($inputClassName)];
 
         foreach ($classLikeNames as $classLikeName => $_) {
             if (isset($this->mapperFactories[$classLikeName])) {

tests/Runtime/OptionalNoneTest.php

@@ -47,6 +47,7 @@ static function (): void {
 
     public function testGetOrElse(): void
     {
+        // @phpstan-ignore-next-line always true
         self::assertSame('default', Optional::none([], 'key')->getOrElse('default'));
     }