Read only shares don't work.

[31337-4554551n]

Description
Sharing your cookbook with another user as read only doesn't work. You are forced to give other users edit permissions

Reproduction
Steps to reproduce the behavior:

1. Share your Recipes folder with another user
2. Give them read only access

Expected behavior
They can set that folder as their recipes folder, and view the recipes

Actual behavior
Cookbook does not open the folder

Screenshots
If applicable, add screenshots to help explain your problem.

Browser
Firefox/Chromium

Versions
Nextcloud server version:30.0.2
Cookbook version: 0.11.2
Database system: MariaDB

---

Depends on #120

[github-actions]

This PR/issue depends on:

• [Feature Request] Share recipe with other nextcloud users #120
  By Dependent Issues (🤖). Happy coding!