Merge branch 'PHP-8.3'

* PHP-8.3:
  Fix crash in ParentNode::append() when dealing with a fragment containing text nodes

Author: nielsdos

ext/dom/tests/ParentNode_append_fragment_text_coalesce.phpt

@@ -0,0 +1,21 @@
+--TEST--
+Text coalesce bug when appending fragment with text nodes
+--EXTENSIONS--
+dom
+--FILE--
+<?php
+$document = new DOMDocument();
+$document->loadXML('<root/>');
+
+$sut = $document->createDocumentFragment();
+for($i = 0; $i < 10; $i++) {
+	$textNode = $document->createTextNode("Node$i");
+	$sut->append($textNode);
+}
+
+$document->documentElement->append($sut);
+echo $document->saveXML();
+?>
+--EXPECT--
+<?xml version="1.0"?>
+<root>Node0Node1Node2Node3Node4Node5Node6Node7Node8Node9</root>