[stable34] fix(files): keep deleting live photo peers after a missing one

apps/files/lib/Listener/SyncLivePhotosListener.php

@@ -102,7 +102,7 @@ public function handleCacheEntriesRemovedEvent(CacheEntriesRemovedEvent $cacheEn
 			$peerFile = $this->userFolder->getFirstNodeById($peerFileId);
 
 			if ($peerFile === null) {
-				return; // Peer file not found.
+				continue; // Peer file not found.
 			}
 			$peerFile->delete();
 		}

apps/files/tests/Listener/SyncLivePhotosListenerTest.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Files\Tests\Listener;
+
+use OC\Files\View;
+use OCA\Files\Listener\SyncLivePhotosListener;
+use OCA\Files\Service\LivePhotosService;
+use OCP\Files\Cache\CacheEntriesRemovedEvent;
+use OCP\Files\Cache\ICacheEvent;
+use OCP\Files\File;
+use OCP\Files\Folder;
+use OCP\Files\IRootFolder;
+use OCP\FilesMetadata\IFilesMetadataManager;
+use PHPUnit\Framework\MockObject\MockObject;
+use Test\TestCase;
+
+final class SyncLivePhotosListenerTest extends TestCase {
+	private Folder&MockObject $userFolder;
+	private LivePhotosService&MockObject $livePhotosService;
+	private SyncLivePhotosListener $listener;
+
+	#[\Override]
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->userFolder = $this->createMock(Folder::class);
+		$this->livePhotosService = $this->createMock(LivePhotosService::class);
+
+		$this->listener = new SyncLivePhotosListener(
+			$this->userFolder,
+			$this->createMock(IFilesMetadataManager::class),
+			$this->livePhotosService,
+			$this->createMock(IRootFolder::class),
+			$this->createMock(View::class),
+		);
+	}
+
+	public function testCacheEntriesRemovedDeletesPeersAfterMissingOne(): void {
+		$entries = array_map(function (int $fileId): ICacheEvent {
+			$entry = $this->createMock(ICacheEvent::class);
+			$entry->method('getFileId')->willReturn($fileId);
+			return $entry;
+		}, [1, 2]);
+
+		$this->livePhotosService->method('getLivePhotoPeerIds')
+			->with([1, 2])
+			->willReturn([11, 12]);
+
+		$peer = $this->createMock(File::class);
+		$peer->expects($this->once())->method('delete');
+
+		$this->userFolder->method('getFirstNodeById')
+			->willReturnMap([
+				[11, null],
+				[12, $peer],
+			]);
+
+		$this->listener->handle(new CacheEntriesRemovedEvent($entries));
+	}
+}