Lots of "TLS handshake error"

### Prerequisites

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

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

- [x] I want to report a bug and not [ask a question or ask for help](https://github.com/AdguardTeam/AdGuardHome/discussions/categories/q-a)

- [x] I have set up AdGuard Home correctly and [configured clients to use it](https://github.com/AdguardTeam/AdGuardHome/wiki/Clients). (Use the [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions/categories/q-a) for help with installing and configuring clients.)

### Platform (OS and CPU architecture)

Linux, MIPS64 LE

### Installation

GitHub releases or script from README

### Setup

On a router, DHCP is handled by the router

### AdGuard Home version

v0.108.0-b.62

### Action

The log file is full of error messages such as:

```
2025/01/21 23:55:01.424793 [info] tls: number of certs: 1
2025/01/21 23:55:19.076127 [error] http: TLS handshake error from 192.168.1.87:62249: remote error: tls: unknown certificate server=https
```

The client is an iPad. The AGH server is running on port 8443 and I have encryption enabled because I want the admin interface over https but I don't care for DoH or DoT, just plain DNS53 on the LAN.

This seems to have started with v0.108.0-b.62

### Expected result

Do not flood the log file with these messages.

### Actual result

Lots of log messages that are not useful.

### Additional information and/or screenshots

Can all of these be moved to debug log level instead?