fix(files_versions): Folder should not be hardcoed

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>

Author: solracsf

apps/files_versions/lib/Versions/LegacyVersionsBackend.php

@@ -367,16 +367,20 @@ public function importVersionsForFile(IUser $user, Node $source, Node $target, a
 	 * @inheritdoc
 	 */
 	public function clearVersionsForFile(IUser $user, Node $source, Node $target): void {
-		$userFolder = $this->rootFolder->getUserFolder($user->getUID());
+		$userId = $user->getUID();
+		$userFolder = $this->rootFolder->getUserFolder($userId);
 
 		$relativePath = $userFolder->getRelativePath($source->getPath());
 		if ($relativePath === null) {
 			throw new Exception('Relative path not found for node with path: ' . $source->getPath());
 		}
 
-		$versions = Storage::getVersions($user->getUID(), $relativePath);
-		/** @var Folder versionFolder */
-		$versionFolder = $this->rootFolder->get('admin/files_versions');
+		$versionsFolder = $this->rootFolder->get($userId . '/files_versions');
+		if (!$versionsFolder instanceof Folder) {
+			throw new Exception('User versions folder is not a valid folder: ' . $versionsFolderPath);
+		}
+
+		$versions = Storage::getVersions($userId, $relativePath);
 		foreach ($versions as $version) {
 			$versionFolder->get($version['path'] . '.v' . (int)$version['version'])->delete();
 		}