[FOLLOWUP][BUGFIX] Add missing htmlspecialchars() and cleanup in DebuggerUtility

Add missing htmlspecialchars() calls in
EXT:extbase/Classes/Utility/DebuggerUtility.php and cleanup indents in
collections.

Resolves: #83450
Related: #83356
Releases: master
Change-Id: I85a82b7c88e91173485938e95436bad8677694c6
Reviewed-on: https://review.typo3.org/55242


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Alexander Opitz <opitz.alexander@googlemail.com>
Tested-by: Alexander Opitz <opitz.alexander@googlemail.com>

typo3/sysext/extbase/Classes/Utility/DebuggerUtility.php

@@ -464,8 +464,9 @@ class DebuggerUtility
     {
         $dump = '';
         foreach ($collection as $key => $value) {
+            $dump .= PHP_EOL . str_repeat(self::PLAINTEXT_INDENT, $level);
             if ($plainText) {
-                $dump .= PHP_EOL . str_repeat(self::PLAINTEXT_INDENT, $level) . self::ansiEscapeWrap($key, '37', $ansiColors);
+                $dump .= self::ansiEscapeWrap($key, '37', $ansiColors);
             } else {
                 $dump .= '<span class="extbase-debug-property">' . htmlspecialchars($key) . '</span>';
             }