[BUGFIX] Avoid undefined array key access in StaticRouteResolver

Resolves: #101394
Releases: main, 12.4, 11.5
Change-Id: I1d0cbb99496108180cf1f06045934bb510abcd3f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/80188


Tested-by: Alexander Schnitzler <git@alexanderschnitzler.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Thomas Hohn <tho@gyldendal.dk>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Alexander Schnitzler <git@alexanderschnitzler.de>
Tested-by: Thomas Hohn <tho@gyldendal.dk>

typo3/sysext/frontend/Classes/Middleware/StaticRouteResolver.php

@@ -125,7 +125,7 @@ class StaticRouteResolver implements MiddlewareInterface
         $parameters['type'] = $urlParams['pagetype'] ?? 0;
         $parameters['_language'] = $request->getAttribute('language', null);
         $uri = $site->getRouter()->generateUri(
-            (int)$urlParams['pageuid'],
+            (int)($urlParams['pageuid'] ?? 0),
             $parameters,
             '',
             RouterInterface::ABSOLUTE_URL