AC-1314: Fix copyright sniff

Author: eliseacornejo

Magento2/Sniffs/Legacy/CopyrightAnotherExtensionsFilesSniff.php

@@ -7,6 +7,7 @@
 
 namespace Magento2\Sniffs\Legacy;
 
+use Magento2\Sniffs\Less\TokenizerSymbolsInterface;
 use PHP_CodeSniffer\Files\File;
 use PHP_CodeSniffer\Sniffs\Sniff;
 
@@ -16,14 +17,17 @@ class CopyrightAnotherExtensionsFilesSniff implements Sniff
 
     private const COPYRIGHT_MAGENTO_TEXT = 'Copyright © Magento, Inc. All rights reserved.';
     private const COPYRIGHT_ADOBE = '/Copyright \d+ Adobe/';
+
+    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS, 'PHP'];
 
     /**
      * @inheritDoc
      */
     public function register(): array
     {
         return [
-            T_INLINE_HTML
+            T_INLINE_HTML,
+            T_OPEN_TAG
         ];
     }