fix: build example phar fail on ci

Author: inhere

.github/workflows/php.yml

@@ -60,5 +60,5 @@ jobs:
 
       - name: Test build PHAR
         run: |
-          php -d phar.readonly=0 examples/app phar pack -o=myapp.phar
+          php -d phar.readonly=0 examples/app phar pack --no-progress -o=myapp.phar
           php myapp.phar -h

phar.build.inc

@@ -25,6 +25,7 @@ $compiler
     'composer.json',
     'README.md',
     'test/bootstrap.php',
+    'examples/commands.php'
   ])
   ->setCliIndex('examples/app')
   // ->setWebIndex('web/index.php')

src/Component/PharCompiler.php

@@ -263,7 +263,7 @@ private static function checkEnv(): void
      * @throws BadMethodCallException
      * @throws RuntimeException
      */
-    public static function unpack(string $pharFile, string $extractTo, array|string $files = null, bool $overwrite = false): bool
+    public static function unpack(string $pharFile, string $extractTo, array|string|null $files = null, bool $overwrite = false): bool
     {
         self::checkEnv();