How many adlists does a single domain appear in

### 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

- Let's say you have multiple adlists.
- Let's say one domain `metrics.icloud.com` appears in 2 adlists.
- Now, you open `Adguard Home` and you visit the dashboard and see this domain was blocked.
- Let's say the domain is `metrics.icloud.com`
- Go to Filters, then `custom filtering rules` and type in this `metrics.icloud.com` to `check the filtering` tab and click `check`.
- It will indicate that it came from `Adguard dns filter` (which is a single filter).
- But the problem is that if you have multiple DNS filters, many adlists will have the same domain `metrics.icloud.com` (which is not shown to you.)
- For some reason, AdGuard Home only lists the first adlist it found this domain from.
- On the other hand, if you were using Pihole, you can easily see how many adlists this domain belongs to.

### Proposed solution

List multiple adlists where the domain appears in, for clarity.

### Alternatives considered and additional information

_No response_