Remove outdated fragment preambles from tree output

sirreal · sirreal · commit fbded057c6ce · 2024-09-13T13:39:59.000+02:00
When fragments were used instead of full processors, some fake tree
structure had to be prepended to the output.

This is no longer necessary and breaks the fragment cases.
diff --git a/tests/phpunit/tests/html-api/wpHtmlProcessorHtml5lib.php b/tests/phpunit/tests/html-api/wpHtmlProcessorHtml5lib.php
@@ -232,8 +232,8 @@ private static function build_tree_representation( ?string $fragment_context, st
 		 * and requires adjustment to initial parameters.
 		 * The full parser will not.
 		 */
-		$output       = $fragment_context ? "<html>\n  <head>\n  <body>\n" : '';
-		$indent_level = $fragment_context ? 2 : 0;
+		$output       = '';
+		$indent_level = 0;
 		$indent       = '  ';
 		$was_text     = null;
 		$text_node    = '';
