Fix serverless attachment framework tests for MKI (#175085)

## Summary

This PR fixes the cases attachment framework tests for MKI runs with
search projects.

### Details

- Recently, a refresh of the default data view field list has been added
(as part of field caps caching)
- However, during test run time, this data view does not necessarily
exist anymore (might have been cleaned up by an earlier test)
- This was the case for our MKI test runs (where tests run in a
different order / in different groups than in CI, which made the test
fail
- This introduced an optional parameter to ignore a missing data view
when `refreshDataViewFieldList` is called, which allows us to just move
on in that scenario

test/functional/page_objects/settings_page.ts

@@ -494,10 +494,19 @@ export class SettingsPageObject extends FtrService {
     await customDataViewIdInput.type(value);
   }
 
-  async refreshDataViewFieldList(dataViewName?: string) {
+  async refreshDataViewFieldList(
+    dataViewName?: string,
+    options: { ignoreMissing?: boolean } = { ignoreMissing: false }
+  ) {
     if (dataViewName) {
       await this.common.navigateToApp('management/kibana/dataViews');
       await this.header.waitUntilLoadingHasFinished();
+      if (
+        options.ignoreMissing &&
+        (await this.testSubjects.exists(`detail-link-${dataViewName}`)) === false
+      ) {
+        return;
+      }
       await this.testSubjects.click(`detail-link-${dataViewName}`);
     }
     await this.testSubjects.click('refreshDataViewButton');

x-pack/test_serverless/functional/test_suites/search/cases/attachment_framework.ts

@@ -34,7 +34,7 @@ export default ({ getPageObject, getService }: FtrProviderContext) => {
           'x-pack/test/functional/fixtures/kbn_archiver/lens/lens_basic.json'
         );
 
-        await settings.refreshDataViewFieldList('default:all-data');
+        await settings.refreshDataViewFieldList('default:all-data', { ignoreMissing: true });
 
         await svlSearchNavigation.navigateToLandingPage();