DoH/3 DNS upstream can be added in the native implementation mode

[Versty]

Version

AdGuard for iOS 4.5 (1002)

Environment

iPhone XS, 16.5.1

Steps to reproduce

1. Launch AdGuard
2. Open the Protection tab -> DNS protection screen -> DNS implementation
3. Switch the implementation from AdGuard to Native
4. Go to DNS server screen
5. Scroll down and click the Add a custom DNS server
6. Enter any server name
7. Enter h3://dns.adguard-dns.com/dns-query in the DNS server address field
8. Tap the Save button

Expected behaviour

The error message "DNS-over-HTTPS/3 is not supported by the system" is displayed. Similar to when trying to add DoQ upstreams.

Error message for DoQ upstreams

Actual behaviour

DNS server has been added and selected successfully