[BUGFIX] Fix PHP 8.1 warnings in ExtbasePluginEnhancer

Resolves: #98059
Releases: main, 11.5
Change-Id: I078db9039c2f0acb05933fa6a86ca5d73b3fb5d7
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75337


Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/extbase/Classes/Routing/ExtbasePluginEnhancer.php

@@ -200,10 +200,10 @@ class ExtbasePluginEnhancer extends PluginEnhancer
         }
         $controller = $route->getDefault('_controller');
         [$controllerName, $actionName] = explode('::', $controller);
-        if ($controllerName !== $parameters[$this->namespace]['controller']) {
+        if (!isset($parameters[$this->namespace]['controller']) || $controllerName !== $parameters[$this->namespace]['controller']) {
             return false;
         }
-        if ($actionName !== $parameters[$this->namespace]['action']) {
+        if (!isset($parameters[$this->namespace]['action']) || $actionName !== $parameters[$this->namespace]['action']) {
             return false;
         }
         return true;