TimePicker: Set time to to 23:59:59 when setting To time using calendar (#18595)

packages/grafana-ui/src/components/TimePicker/TimePickerPopover.tsx

@@ -51,7 +51,7 @@ export class TimePickerPopover extends Component<Props, State> {
   onToCalendarChanged = (value: DateTime) => {
     value.set('h', 23);
     value.set('m', 59);
-    value.set('s', 0);
+    value.set('s', 59);
     this.setState({ to: value });
   };