fix AF-2662
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## Summary by CodeRabbit
- **Chores**
- Changed the default setting for blur background effect to be disabled for new users. Existing users' preferences remain unaffected.
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- moved `appSettingAtom` to infra since we now have different packages that depends on it. There is no better place to fit in for now
- use atomEffect to sync setting changes to updater related configs to Electron side
- refactored how Electron reacts to updater config changes.