perf: More tracing for handleNewBooking

[keithwillcode]

What does this PR do?

Follow up of #18212

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?

• Ensure full test suite passes

[vercel]

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2 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
cal	⬜️ Ignored (Inspect)			Dec 17, 2024 11:30am
calcom-web-canary	⬜️ Ignored (Inspect)			Dec 17, 2024 11:30am

[graphite-app]

Graphite Automations

"Add foundation team as reviewer" took an action on this PR • (12/17/24)

1 reviewer was added to this PR based on Keith Williams's automation.

[github-actions]

E2E results are ready!

• Workflow #41642.1 latest results

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ **PrismaClientValidationError: ** POST /api/bookings View Issue

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