Applied code review suggestions

Author: adamwojs

src/lib/Relay/PageAwareConnection.php

@@ -13,6 +13,7 @@
 use Overblog\GraphQLBundle\Relay\Connection\ConnectionBuilder;
 use Overblog\GraphQLBundle\Relay\Connection\ConnectionInterface;
 use Overblog\GraphQLBundle\Relay\Connection\PageInfoInterface;
+use UnexpectedValueException;
 
 /**
  * @phpstan-template T
@@ -48,15 +49,15 @@ public static function fromConnection(ConnectionInterface|Promise $connection, A
     {
         $connection = self::resolvePromise(
             $connection,
-            static fn ($resolved) => $resolved instanceof ConnectionInterface,
+            static fn ($resolved): bool => $resolved instanceof ConnectionInterface,
             'Resolved result is not a ConnectionInterface'
         );
 
         $return = new self($connection->getEdges(), $connection->getPageInfo());
 
         $totalCount = self::resolvePromise(
             $connection->getTotalCount(),
-            static fn ($resolved) => is_int($resolved) || null === $resolved,
+            static fn ($resolved): bool => is_int($resolved) || null === $resolved,
             'Resolved result is not an int or null'
         );
 
@@ -82,7 +83,7 @@ private static function resolvePromise(mixed $value, callable $validator, string
             $resolvedValue = $promiseAdapter->wait($value);
 
             if (!$validator($resolvedValue)) {
-                throw new \UnexpectedValueException($errorMessage);
+                throw new UnexpectedValueException($errorMessage);
             }
 
             return $resolvedValue;