fix: managed event type bug

[Udit-takkar]

What does this PR do?

This PR fixes the issue when you update the cal video settings on the team managed event type but the children event types were not updated.

Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• N/A I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
• I confirm automated tests are in place that prove my fix is effective or that my feature works.

How should this be tested?

1. Create a manageed event type and assign some team members
2. Update teh cal video setting on event type setup page
3. Check if the cal video settings were updated on all the children event types.

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Summary by cubic

Fixes Cal Video settings propagation for managed event types so children stay in sync. New children inherit settings; existing children are updated or cleared based on parent changes.

• Bug Fixes
  • Create CalVideoSettings for new child event types when the parent has settings.
  • Upsert settings for existing children; delete when the parent removes Cal Video; no-op when unchanged.
  • Update handler passes the correct calVideoSettings to children based on input and Cal Video location state, with tests covering create/sync/delete/no-op.

^{Written for commit 78e7603. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 3 files

[joeauyeung]

Tested and working as expected