Feature Request: Add Scroll Bar to Device List for Improved Usability with Multiple Network Devices

[XiaoLey]

Firstly, I'd like to extend my appreciation for the effort you've put into developing this incredibly useful tool. It has significantly enhanced my experience when monitoring network statistics.

However, I've encountered an issue that impacts usability when the number of network devices increases, such as when Docker is enabled on my system. In such scenarios, the dropdown list becomes overfilled with network devices. It appears that the current design lacks a scroll bar in the device list. This omission makes it challenging to expand the details of a specific device when the list is overly populated.

The absence of a scroll bar also complicates the process of setting a particular device as the default, as navigating through an extensive list without the ability to scroll is practically impossible.

Integrating a scroll bar into the device list could considerably enhance the usability of gnome-network-stats, especially for users who frequently deal with a large number of network devices. This feature would allow for easier navigation and interaction within the tool, ensuring that users can efficiently manage and monitor their devices regardless of the quantity.

Thank you for considering this feature request. I believe that adding a scroll bar to the device list would be a valuable improvement to gnome-network-stats, benefiting many users who share a similar situation.