Explore: Set default time range to now-1h (#81135)

Update default time range in Explore back to now-1h

public/app/features/explore/hooks/useStateSync/migrators/v0.ts

@@ -20,8 +20,8 @@ export const v0Migrator: MigrationHandler<never, ExploreURLV0> = {
             datasource: null,
             queries: [],
             range: {
-              from: 'now-6h',
-              to: 'now',
+              from: DEFAULT_RANGE.from,
+              to: DEFAULT_RANGE.to,
             },
           },
           schemaVersion: 0,

public/app/features/explore/state/utils.ts

@@ -32,7 +32,7 @@ import { getDatasourceSrv } from '../../plugins/datasource_srv';
 import { loadSupplementaryQueries } from '../utils/supplementaryQueries';
 
 export const DEFAULT_RANGE = {
-  from: 'now-6h',
+  from: 'now-1h',
   to: 'now',
 };