[Drilldowns] Basic functional test

[Dosant]

Summary

Better wait for: #60087 before finalising.

Adds a function test that:

1. Creates a drilldown
2. Checks that can Drilldowns to destination dashboard
3. Deletes created drilldown

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• This was checked for keyboard-only and screenreader accessibility
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser
• This was checked for cross-browser compatibility, including a check against IE11

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[Dosant]

Merged into #60087 with bd7a91c

[kibanamachine]

💔 Build Failed

• continuous-integration/kibana-ci/pull-request
• Commit: bd7a91c

History

• 💔 Build #34904 failed 8a51970c24fc0d99581c6f07a3a876353eb2d79a
• 💔 Build #34880 failed 5f75239cf13cec067b35005152eeb1a225765456
• 💔 Build #34557 failed 6582be202a303524926fe51c2091aa26e65d262d
• 💔 Build #33377 failed e2308a9359da4a1b7f01d16e0afc2f2da6164fd6

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@elasticmachine merge upstream