Provide blinking lights or other animation for network traffic in new dock performance section

### Description of the new feature / enhancement

small, discrete blinking lights or other animation in the network traffic indicators.

### Scenario when this would be used?

Sometimes we just want to know at a glance how busy an interface is without having to focus on the numbers.........

### Supporting information

_No response_

Start by locating the new dock performance section and reviewing how its network traffic indicators receive and display data. Define the animation behavior and verify that it gives a clear at-a-glance indication of interface activity without requiring attention to the numeric values.

Written by the indexing model from the issue text.