PTR queries for DHCP clients aren't being affected by filtering rules

### Prerequisites

- [x] I am running the latest version
- [x] I checked the documentation and found no answer
- [ ] I checked to make sure that this issue has not already been filed

### Issue Details

* **Version of AdGuard Home server:**
* 0.106.3
* **How did you install AdGuard Home:**
* Docker
* **How did you setup DNS configuration:**
*
* **If it's a router or IoT, please write device model:**
*
* **CPU architecture:**
* arm64
* **Operating system and version:**
* Ubuntu 20.04

### Issue Details

I've created a rule that blocks PTR queries for my local network range.

However, some queries are still being answered:

### Additional Information

Seems like it replies to queries when AGH is used as DHCP.