[UI]: Show creator and comment for silencer in the Silences list view for better context

[ivanahuckova]

In the Silences list view, it would be helpful to display who created the silencer and the reason for silencing it. This would allow for a quick understanding of why a silencer was created without needing to inspect each one individually.

Impact

• Improves visibility and understanding of silences.
• Reduces the need for manual inspection of individual silencers.
• Enhances operational efficiency for teams managing silences.