Specify Brave Sync server URL

Specify the URL for Brave to use with its sync service. If this policy is set to a non empty string, that string will be used as the URL with Brave Sync. If this policy is not set, the URL will default to Brave's sync server URL. The provided URL must use the `https` scheme. Giá trị mẫu: https://sync-v2.brave.com/v2