Fix number of rules in set filter

phpstan.neon

@@ -61,7 +61,3 @@ parameters:
             paths:
                 - src/FileSystem/RectorFinder.php
                 - src/Repository/PostRepository.php
-
-        -
-            message: '#Parameter \#3 \$rectorClasses of class App\\RuleFilter\\ValueObject\\RectorSet constructor expects array<class-string<Rector\\Contract\\Rector\\RectorInterface>>, array<int, array<class-string<Rector\\Contract\\Rector\\RectorInterface>, array<mixed>>|class-string<Rector\\Contract\\Rector\\RectorInterface>> given#'
-            path: src/Sets/RectorSetsTreeProvider.php

src/Sets/RectorSetsTreeProvider.php

@@ -100,8 +100,14 @@ private function createRectorSetsFromSetProviders(array $sets): array
         $setRectorsResolver = new SetRectorsResolver();
 
         foreach ($sets as $set) {
-            $rectorClasses = $setRectorsResolver->resolveFromFilePathIncludingConfiguration($set->getSetFilePath());
-            $rectorSets[] = new RectorSet($set->getGroupName(), $set->getName(), $rectorClasses);
+            // Only consider rector classes without configuration, just as in the result list.
+            $rectorClasses = array_filter(
+                $setRectorsResolver->resolveFromFilePathIncludingConfiguration($set->getSetFilePath()),
+                static fn ($rectorClass) => is_string($rectorClass),
+            );
+            if ($rectorClasses !== []) {
+                $rectorSets[] = new RectorSet($set->getGroupName(), $set->getName(), $rectorClasses);
+            }
         }
 
         return $rectorSets;