Fix reviewer icons misalignment by adding align-items: center

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

webviews/common/common.css

@@ -235,6 +235,7 @@ body img.avatar {
 
 .reviewer-icons {
 	display: flex;
+	align-items: center;
 	gap: 4px;
 }