Improve color scheme of "top clients" chart

### 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

On dashboard, there is Top clients chart. It use green color for clients with most requests, yellow for mid and red for few requests. I always considered this strange - there is nothing good (green) about having many DNS requests, and nothing bad (red) about having few requests.

### Proposed solution

Change color scheme to show ratio of good queries vs. bad queries for each client:

### Alternatives considered and additional information

_No response_