[FEATURE] Turn on Olly II features in playground

[yuye-aws]

Is your feature request related to a problem?

Since 2.18, Olly II features have been code ready. We are going to turn on these features in https://playground.opensearch.org/

What solution would you like?

I'll create a PR to turn on the feature flags for all the Olly II features.

What alternatives have you considered?

A clear and concise description of any alternative solutions or features you've considered.

Do you have any additional context?

Add any other context or screenshots about the feature request here.

[dblock]

[Catch All Triage - 1, 2, 3, 4, 5]

[yuye-aws]

Closing this issue as this is not needed now.