Merge pull request #30695 from nextcloud/backport/30631/stable23

[stable23] updateEncryptedVersion: cleanup on target if cache already got renamed

Author: MichaIng

lib/private/Files/Storage/Wrapper/Encryption.php

@@ -694,7 +694,16 @@ private function updateEncryptedVersion(Storage\IStorage $sourceStorage, $source
 			'encrypted' => $isEncrypted,
 		];
 		if ($isEncrypted) {
-			$encryptedVersion = $sourceStorage->getCache()->get($sourceInternalPath)['encryptedVersion'];
+			$sourceCacheEntry = $sourceStorage->getCache()->get($sourceInternalPath);
+			$targetCacheEntry = $this->getCache()->get($targetInternalPath);
+
+			// Rename of the cache already happened, so we do the cleanup on the target
+			if ($sourceCacheEntry === false && $targetCacheEntry !== false) {
+				$encryptedVersion = $targetCacheEntry['encryptedVersion'];
+				$isRename = false;
+			} else {
+				$encryptedVersion = $sourceCacheEntry['encryptedVersion'];
+			}
 
 			// In case of a move operation from an unencrypted to an encrypted
 			// storage the old encrypted version would stay with "0" while the