[Bug] Calendar invite owner not updating after reassignment

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Summary

When a booking is reassigned to a different team member, the calendar invite still lists the original host as the owner.

Steps to Reproduce

1. Go to the team event settings in Cal.com.
2. Book a meeting assigned to Host A.
3. Reassign the booking to Host B.
4. Check the generated calendar invite in Google/Outlook.
5. Observe that the invite owner remains as Host A.

Expected Result

After reassignment, the calendar invite owner should update to the new host (Host B) and reflect correctly in both the calendar metadata and the attendee list.Actual Result

Actual Result

The ownership field remains unchanged — the invite still appears to belong to the original host.

Impact

Severity: S2 (High)

Users affected: All multi-host setups using reassignment (approx. 20–30% of enterprise users).

[linear]

CAL-6547