Perform sanity check on uptime for status page

Fixes #2628
A sanity check is performed when calculating the uptime of a monitor on
status page. If it is greater than 100%, we just show 100%. This hasn't
been implemented on the dashboard at the request of @louislam due to
concerns it would make debugging more difficult in future if changes
were made to the uptime calculation.

Signed-off-by: Matthew Nickson <mnickson@sidingsmedia.com>

src/components/Uptime.vue

@@ -33,7 +33,13 @@ export default {
             let key = this.monitor.id + "_" + this.type;
 
             if (this.$root.uptimeList[key] !== undefined) {
-                return Math.round(this.$root.uptimeList[key] * 10000) / 100 + "%";
+                let result = Math.round(this.$root.uptimeList[key] * 10000) / 100;
+                // Only perform sanity check on status page. See louislam/uptime-kuma#2628
+                if (this.$route.path.startsWith("/status")) {
+                    return result > 100 ? "100%" : result + "%";
+                } else {
+                    return result + "%";
+                }
             }
 
             return this.$t("notAvailableShort");