Enable scheduled ClickHouse backups across the job, API, and UI, and
guard unsupported database types via isBackupSolutionAvailable().
Convert Stripe subscription sync from a job to an action with clearer
discrepancy resolution, and add cloud:export-users plus
cloud:cleanup-unverified-users with tests.
- Updated dashboard, destination, project, and server views to replace 'box' class with 'coolbox' for improved visual consistency.
- Modified links and buttons in shared variables and scheduled tasks views to utilize 'coolbox' class.
- Ensured all relevant components reflect the new styling approach, enhancing user experience and interface coherence.
