fix(files): Check read permission before showing PDF edit action

The "Edit with Collabora" file action was displayed for files the user
lacks permission to access. Added a Permission.READ check in the
enabled callback, consistent with how core Nextcloud file actions
gate on node permissions.

Signed-off-by: nfebe <fenn25.fn@gmail.com>

Author: nfebe

src/file-actions.js

@@ -2,7 +2,7 @@
  * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
-import { registerFileAction } from '@nextcloud/files'
+import { Permission, registerFileAction } from '@nextcloud/files'
 import { getCapabilities } from './services/capabilities.ts'
 import { translate as t } from '@nextcloud/l10n'
 
@@ -28,6 +28,10 @@ const openPdf = {
 			return false
 		}
 
+		if ((nodes[0].permissions & Permission.READ) === 0) {
+			return false
+		}
+
 		const isPdf = nodes[0].mime === 'application/pdf'
 		// Only enable the file action when files_pdfviewer is enabled
 		const optionalMimetypes = getCapabilities().mimetypesNoDefaultOpen