Tasks disconnects

### What Happened?


1. Tasks is disconnected from the Nextcloud server and stays like that if I don't login again from Online Accounts. After the app restart, it disconnects again.

2. Tasks doesn't send alerts/notifications even when the app is open and even though the task I created is local. So this is directly related to Tasks app and not an Online Accounts issue.

3. Tasks fails to run in the background unlike the Calendar app.

### Steps to Reproduce

1. Sign into an online account from settings
2. Launch Tasks
3. Create a reminder
4. Tasks will not send any notifications
5. Close Tasks
6. See that it doesn't run in the background
7. Launch Tasks again
8. See that it is disconnected

### Expected Behavior

A normal Tasks app that can sync and capable of sending reminders.

### OS Version

6.x (Odin)

### Software Version

Latest release (I have run all updates)

### Log Output

_No response_

### Hardware Info

_No response_