Allow a Domain PC to access a Global Blocked Service

### Prerequisites

- [x] I have checked the [Wiki](https://github.com/AdguardTeam/AdGuardHome/wiki) and [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions) and found no answer

- [x] I have searched other issues and found no duplicates

- [x] I want to request a feature or enhancement and not ask a question

### The problem

I would like to grant access to Dropbox.com from PC-2 in a domain but have been unsuccessful. PC-2 => AGH => DC => (DC Forwarder => AGH) => the website is blocked

1. Filters > Blocked Services > Dropbox.com is blocked
2. This PC is added as a Persistent client (Client Settings > Persistent client) and for this client the 'Use Global blocked services' selector is set to OFF
3. When a domain PC (PC-2.local) tries to visit the website Dropbox.com, its DNS query goes to the DC's and the website is blocked (Global Blocked Services). Any help would be appreciated, to view my setup and more information please see the discussion below

https://github.com/AdguardTeam/AdGuardHome/discussions/7698#discussioncomment-12548314

### Proposed solution

Allow Domain Clients to selectively access Blocked Services

### Alternatives considered and additional information

_No response_