InternalTwoWaySyncWork sometimes throws ExecutionException

### ⚠️ Before posting ⚠️

- [x] This is a **bug**, not a question or an enhancement.
- [x] I've [searched for similar issues](https://github.com/nextcloud/android/issues) and didn't find a duplicate.
- [x] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Steps to reproduce

- Try to sync a folder via TwoWaySync

### Expected behaviour

TwoWaySync must work without any error

### Actual behaviour

InternalTwoWaySyncWork sometimes throws java.util.concurrent.ExecutionException.

### Android version

15

### Device brand and model

Emulator

### Stock or custom OS?

Stock

### Nextcloud android app version

3.30.6

### Nextcloud server version

29.0.4