Avoid avatar resizing in flexbox contexts.

services/web/public/stylesheets/app/editor/review-panel.less

@@ -428,6 +428,8 @@
 	width: 1.3em;
 	height: 1.3em;
 	text-align: center;
+	flex-grow: 0;
+	flex-shring: 0;
 
 	.rp-state-overview & {
 		display: none;