Revert "ResultCacheManager: fix meta key difference for projectConfig"

This reverts commit 8f05c28.

Author: ondrejmirtes

src/Analyser/ResultCache/ResultCacheManager.php

@@ -312,27 +312,18 @@ public function restore(array $allAnalysedFiles, bool $debug, bool $onlyFiles, ?
 return new ResultCache($filesToAnalyse, false, $data['lastFullAnalysisTime'], $meta, $filteredErrors, $filteredLocallyIgnoredErrors, $filteredLinesToIgnore, $filteredUnmatchedLineIgnores, $filteredCollectedData, $invertedDependenciesToReturn, $filteredExportedNodes, $data['projectExtensionFiles']);
 }
 
-/**
- * @param mixed[]|null $projectConfig
- */
-private function normalizeMetaProjectConfig(?array $projectConfig): ?string
-{
-if ($projectConfig !== null) {
-ksort($projectConfig);
-
-return Neon::encode($projectConfig);
-}
-
-return null;
-}
-
 /**
  * @param mixed[] $cachedMeta
  * @param mixed[] $currentMeta
  */
 private function isMetaDifferent(array $cachedMeta, array $currentMeta): bool
 {
-$currentMeta['projectConfig'] = $this->normalizeMetaProjectConfig($currentMeta['projectConfig']);
+$projectConfig = $currentMeta['projectConfig'];
+if ($projectConfig !== null) {
+ksort($currentMeta['projectConfig']);
+
+$currentMeta['projectConfig'] = Neon::encode($currentMeta['projectConfig']);
+}
 
 return $cachedMeta !== $currentMeta;
 }
@@ -347,10 +338,6 @@ private function getMetaKeyDifferences(array $cachedMeta, array $currentMeta): a
 {
 $diffs = [];
 foreach ($cachedMeta as $key => $value) {
-if ($key === 'projectConfig') {
-$value = $this->normalizeMetaProjectConfig($value);
-}
-
 if (!array_key_exists($key, $currentMeta)) {
 $diffs[] = $key;
 continue;