Activate flag for root namespace

What does this MR do and why?

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Relates to PG::QueryCanceled: ERROR: canceling statement ... (#459041 - closed) • Angelo Gulina • 17.4. This MR is a quick follow-up to Conditionally expose member's is using seat info (!164333 - merged) • Angelo Gulina • 17.4.

It relates to problems with Is using seat badge showing up (more info in the Issue). The solution we applied is to hide the badge when the FF is active. The MR targets the root ancestor and it makes it so that once the FF is active on the main namespace, it will be active for all the subgroups.

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