Native mode of DNS encryption and SDNS stamps

### Prerequisites

Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.**

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

### Issue Details

- **AdGuard version:**
- AdGuard for iOS v4.4.5 (990)
- **Device model and storage size:**
- iPhone XR
- **Operating system and version:**
- 16.2

### Expected Behavior

DoH encryption works without initial resolving as bootstrap IP is predefined.

### Actual Behavior

Resolving with SDNS stamps doesn't work and queries is leaked, except .arpa domains.

### Additional Information

I expected that bootstrap IP server from SDNS stamp will be work just like the lines "ServerAddresses" in .mobileconfig. For example:
```
DNSProtocol
HTTPS
ServerAddresses

8.8.4.4
8.8.8.8

ServerURL
https://dns.google/dns-query
```