Increases dimming delay for better intentionality

src/webviews/apps/plus/graph/graph.scss

@@ -597,7 +597,7 @@ a {
 			&.is-missing-hovered-ref-group {
 				opacity: 0.2;
 				transition: opacity 0.5s ease-out;
-				transition-delay: 0.2s;
+				transition-delay: 0.5s;
 			}
 		}
 	}