fix(encryption): Only prevent cache deletion if target is not object store in moveFromStorage

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

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

@@ -536,7 +536,8 @@ class Encryption extends Wrapper {
 
 		$result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
 		if ($result) {
-			if ($sourceStorage->instanceOfStorage(ObjectStoreStorage::class)) {
+			$setPreserveCacheOnDelete = $sourceStorage->instanceOfStorage(ObjectStoreStorage::class) && !$this->instanceOfStorage(ObjectStoreStorage::class);
+			if ($setPreserveCacheOnDelete) {
 				/** @var ObjectStoreStorage $sourceStorage */
 				$sourceStorage->setPreserveCacheOnDelete(true);
 			}
@@ -547,7 +548,7 @@ class Encryption extends Wrapper {
 					$result = $sourceStorage->unlink($sourceInternalPath);
 				}
 			} finally {
-				if ($sourceStorage->instanceOfStorage(ObjectStoreStorage::class)) {
+				if ($setPreserveCacheOnDelete) {
 					/** @var ObjectStoreStorage $sourceStorage */
 					$sourceStorage->setPreserveCacheOnDelete(false);
 				}