make resolveClassReflection non-nullable as always passed a node (#7833)

Author: TomasVotruba

rules/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector.php

@@ -187,10 +187,6 @@ private function shouldSkipPropertyType(Type $propertyType): bool
 
     private function hasSomeUntypedProperties(Class_ $class): bool
     {
-        if ($class->getProperties() === []) {
-            return false;
-        }
-
         foreach ($class->getProperties() as $property) {
             if ($property->type instanceof Node) {
                 continue;

src/Reflection/ReflectionResolver.php

@@ -65,12 +65,8 @@ public function resolveClassAndAnonymousClass(ClassLike $classLike): ClassReflec
         return $this->reflectionProvider->getClass($className);
     }
 
-    public function resolveClassReflection(?Node $node): ?ClassReflection
+    public function resolveClassReflection(Node $node): ?ClassReflection
     {
-        if (! $node instanceof Node) {
-            return null;
-        }
-
         $scope = $node->getAttribute(AttributeKey::SCOPE);
         if (! $scope instanceof Scope) {
             return null;