TASK: Adjust phpstan config to apply level 8 rules to the Flow/Reflection context and remove breaking changes

Author: mficzel

Neos.Flow/Classes/Reflection/ReflectionService.php

@@ -2091,7 +2091,7 @@ protected function cleanClassName(string $className): string
     {
         $className = ltrim($className, '\\');
         if (!class_exists($className)) {
-            throw new \Exception('Invalid class ' . $className, 1744047892);
+            throw new ClassLoadingForReflectionFailedException('Invalid class ' . $className, 1744047892);
         }
 
         return $className;

phpstan.neon.dist

@@ -1,6 +1,7 @@
 parameters:
     level: 8
     paths:
+        - Neos.Flow/Classes/Reflection
         - Neos.Flow/Classes/ResourceManagement
         - Neos.Flow/Classes/Security
         - Neos.Flow/Classes/Session