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;