fix: Reorder the closing of services, prevent sagas running multiple times and close backend server properly

[leblowl]

Fixes:

• We were closing LevelDB before closing OrbitDB which resulted in an exception.

  Solution for #2497

• Sagas were running multiple times after leaving a community due to our use of takeEvery.

  Solution for #2509

• The backend server wasn't getting closed properly when the app went to background on iOS.

  Solution for #2500

• There was a bug in the (old) version of OrbitDB that we are using that caused it to send heads in a loop.

  Solution for #2496 and #2512

Pull Request Checklist

• [ ] I have linked this PR to a related GitHub issue.
• [ ] I have added a description of the change (and Github issue number, if any) to the root CHANGELOG.md.

(Optional) Mobile checklist

Please ensure you completed the following checks if you did any changes to the mobile package:

• [ ] I have run e2e tests for mobile
• [ ] I have updated base screenshots for visual regression tests