fix: persist recovery opts in in-place restore

[jason-lynch]

Summary

It's not possible to persist recovery options outside of the bootstrap process and it's not possible to force Patroni into the bootstrap process if the pgdata directory is non-empty.

So, this commit changes the in-place restore process to temporarily move the pgdata directory to a different name. Then, it changes the bootstrap command to simply move the pgdata directory back to its original name. This lets us keep our existing restore process and makes patroni keep the recovery options.

Testing

• Use the Reverting to an earlier backup Bruno scenario in the local-backup-and-restore directory with these modifications:
  • After creating the database, add some data to it
  • Submit the Backup database node request
    • Note the set name (e.g. 20251221-201008F) in the developer console output or look at the directory name in the repos folder
  • Delete the data from the database
  • Resubmit the Backup database node request
  • Modify and submit the Restore database node request with these options to restore the first set you created:

{
  "restore_config": {
    "source_database_id": "storefront",
    "source_node_name": "n1",
    "source_database_name": "storefront",
    "repository": {
      "id": "{{repository_id}}",
      "type": "posix",
      "base_path": "/backups"
    },
    "restore_options": {
      "type": "immediate",
      "set": "<set name from above>"
    }
  }
}

• Validate that the data was restored to the database

PLAT-368