ext/xmlreader: Add class constant types to stub (#13596)

Declares class constant types for the `XMLReader` class.

Author: Ayesh

UPGRADING

@@ -481,6 +481,9 @@ PHP 8.4 UPGRADE NOTES
 - Sqlite:
   . The class constants are typed now.
 
+- XMLReader:
+  . The class constants are typed now.
+
 - XSL:
   . The typed properties XSLTProcessor::$cloneDocument and
     XSLTProcessor::$doXInclude are now declared.

ext/xmlreader/php_xmlreader.stub.php

@@ -7,118 +7,96 @@ class XMLReader
     /* Constants for NodeType - cannot define common types to share with dom as there are differences in these types */
 
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_NONE
      */
-    public const NONE = UNKNOWN;
+    public const int NONE = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_ELEMENT
      */
-    public const ELEMENT = UNKNOWN;
+    public const int ELEMENT = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_ATTRIBUTE
      */
-    public const ATTRIBUTE = UNKNOWN;
+    public const int ATTRIBUTE = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_TEXT
      */
-    public const TEXT = UNKNOWN;
+    public const int TEXT = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_CDATA
      */
-    public const CDATA = UNKNOWN;
+    public const int CDATA = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_ENTITY_REFERENCE
      */
-    public const ENTITY_REF = UNKNOWN;
+    public const int ENTITY_REF = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_ENTITY
      */
-    public const ENTITY = UNKNOWN;
+    public const int ENTITY = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_PROCESSING_INSTRUCTION
      */
-    public const PI = UNKNOWN;
+    public const int PI = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_COMMENT
      */
-    public const COMMENT = UNKNOWN;
+    public const int COMMENT = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_DOCUMENT
      */
-    public const DOC = UNKNOWN;
+    public const int DOC = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_DOCUMENT_TYPE
      */
-    public const DOC_TYPE = UNKNOWN;
+    public const int DOC_TYPE = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_DOCUMENT_FRAGMENT
      */
-    public const DOC_FRAGMENT = UNKNOWN;
+    public const int DOC_FRAGMENT = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_NOTATION
      */
-    public const NOTATION = UNKNOWN;
+    public const int NOTATION = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_WHITESPACE
      */
-    public const WHITESPACE = UNKNOWN;
+    public const int WHITESPACE = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_SIGNIFICANT_WHITESPACE
      */
-    public const SIGNIFICANT_WHITESPACE = UNKNOWN;
+    public const int SIGNIFICANT_WHITESPACE = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_END_ELEMENT
      */
-    public const END_ELEMENT = UNKNOWN;
+    public const int END_ELEMENT = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_END_ENTITY
      */
-    public const END_ENTITY = UNKNOWN;
+    public const int END_ENTITY = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_READER_TYPE_XML_DECLARATION
      */
-    public const XML_DECLARATION = UNKNOWN;
+    public const int XML_DECLARATION = UNKNOWN;
 
     /* Constants for Parser options */
 
     /**
-     * @var int
      * @cvalue XML_PARSER_LOADDTD
      */
-    public const LOADDTD = UNKNOWN;
+    public const int LOADDTD = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_PARSER_DEFAULTATTRS
      */
-    public const DEFAULTATTRS = UNKNOWN;
+    public const int DEFAULTATTRS = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_PARSER_VALIDATE
      */
-    public const VALIDATE = UNKNOWN;
+    public const int VALIDATE = UNKNOWN;
     /**
-     * @var int
      * @cvalue XML_PARSER_SUBST_ENTITIES
      */
-    public const SUBST_ENTITIES = UNKNOWN;
+    public const int SUBST_ENTITIES = UNKNOWN;
 
 
     public int $attributeCount;