[BUGFIX] Respect index in page type resolution

Resolves: #87155
Releases: master, 9.5
Change-Id: I58595468242e645fe5d0322d84aab80611dbac3e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62863


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Benni Mack <benni@typo3.org>

typo3/sysext/core/Classes/Routing/Enhancer/PageTypeDecorator.php

@@ -218,7 +218,7 @@ class PageTypeDecorator extends AbstractEnhancer implements DecoratingEnhancerIn
         if (!empty($regularItems) && !empty($this->index)) {
             $name = $useNames ? '?P<indexItems>' : '';
             $indexPattern = $this->quoteForRegularExpressionPattern($this->index);
-            $patterns[] = '(' . $name . $indexPattern . '(?:' . implode('|', $regularItems) . '))';
+            $patterns[] = $indexPattern . '(' . $name . '(?:' . implode('|', $regularItems) . '))';
         }
         if (!empty($regularItems)) {
             $name = $useNames ? '?P<regularItems>' : '';