[Dashboard] Fix flaky sync_colors.tsx test (#172633)

## Summary

It is possible for the `noDataPopover` to take more than the `100ms`
timeout from `ensureHiddenNoDataPopover` (pictured below) to appear - in
these cases, any tests that make use of the Lens page object's
`goToTimeRange` method will fail due to clicking the wrong element (the
tour step rather than the time picker).


![image](35de1215-6f9f-4a72-a0ab-e1a60f5bb80a)


While my initial thought was to simply increase the timeout for the
`noDataPopover` check, this isn't ideal - **a lot** of tests use the
`goToTimeRange` method and, by doing this, we would be slowing down
**every single one of them** even when the test wouldn't have failed to
begin with! Instead, I've chosen to surround the important parts of the
code in `goToTimeRange` with a `retry` - that way, if the
`noDataPopover` never shows up or it shows up comfortably within the
`100ms` timeout, the impact to the speed of a given test will be
**minimal**; however, if the no data popover shows up **outside** of
this timeout, the retry will save the test from outright failure.

### [Flaky Test
Runner](https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/4192)


![image](1ac033d7-6cc1-4789-9a2b-6c7b8c34f67c)


### Checklist
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

test/functional/page_objects/time_picker.ts

@@ -57,6 +57,7 @@ export class TimePickerPageObject extends FtrService {
     });
     if (isVisible) {
       await this.testSubjects.click('noDataPopoverDismissButton');
+      await this.testSubjects.waitForDeleted('noDataPopoverDismissButton');
     }
   }
 

x-pack/test/functional/page_objects/lens_page.ts

@@ -67,12 +67,14 @@ export function LensPageProvider({ getService, getPageObjects }: FtrProviderCont
      * a range that has data in our dataset.
      */
     async goToTimeRange(fromTime?: string, toTime?: string) {
-      await PageObjects.timePicker.ensureHiddenNoDataPopover();
-      fromTime = fromTime || PageObjects.timePicker.defaultStartTime;
-      toTime = toTime || PageObjects.timePicker.defaultEndTime;
-      await PageObjects.timePicker.setAbsoluteRange(fromTime, toTime);
-      // give some time for the update button tooltip to close
-      await PageObjects.common.sleep(500);
+      const from = fromTime || PageObjects.timePicker.defaultStartTime;
+      const to = toTime || PageObjects.timePicker.defaultEndTime;
+      await retry.try(async () => {
+        await PageObjects.timePicker.ensureHiddenNoDataPopover();
+        await PageObjects.timePicker.setAbsoluteRange(from, to);
+        // give some time for the update button tooltip to close
+        await PageObjects.common.sleep(500);
+      });
     },
 
     /**