[7.x] Lexicographically sort location tags (#54832) (#54867)

* Lexicographically sort location tags (#54832)

Sort location tags lexicographically, fixes skipped test by providing a stable, non-time-based sort order

* Update ping list snapshot

Author: andrewvc

x-pack/legacy/plugins/uptime/public/components/functional/location_map/__tests__/__snapshots__/location_status_tags.test.tsx.snap

@@ -11,7 +11,7 @@ import { MonitorLocation } from '../../../../../common/runtime_types/monitor';
 import { LocationStatusTags } from '../';
 
 // Failing: https://github.com/elastic/kibana/issues/54818
-describe.skip('LocationStatusTags component', () => {
+describe('LocationStatusTags component', () => {
   let monitorLocations: MonitorLocation[];
 
   it('renders when there are many location', () => {

x-pack/legacy/plugins/uptime/public/components/functional/location_map/__tests__/location_status_tags.test.tsx

@@ -60,9 +60,9 @@ export const LocationStatusTags = ({ locations }: Props) => {
     }
   });
 
-  // Sort by recent timestamp
+  // Sort lexicographically by label
   upLocations.sort((a, b) => {
-    return a.timestamp < b.timestamp ? 1 : b.timestamp < a.timestamp ? -1 : 0;
+    return a.label > b.label ? 1 : b.label > a.label ? -1 : 0;
   });
 
   moment.locale('en', {