Fix LogConsole using duplicated keys

Fix past lines loaded from the log containing keys that clash with new
items logged.

packages/web_ui/src/components/LogConsole.jsx

@@ -76,7 +76,7 @@ export default function LogConsole(props) {
 				limit: 400,
 				order: "desc",
 			}).then(result => {
-				setPastLines(result.log.map((info, index) => formatLog(info, index)).reverse());
+				setPastLines(result.log.map((info, index) => formatLog(info, -index - 1)).reverse());
 			}).catch(err => {
 				setPastLines([<span key={0}>{`Error loading log: ${err.message}`}<br/></span>]);
 			});