fix: instant booking location lookup

[pedroccastro]

What does this PR do?

Standardizes the instant booking location endpoint to use bookingUid instead of numeric bookingId, aligning with other booking endpoints in the codebase.

Changes

Layer	File(s)	Change
Zod Schema	getInstantBookingLocation.schema.ts	Change input from bookingId: number to bookingUid: string
Handler	getInstantBookingLocation.handler.ts	Query by uid instead of id
Frontend	useBookings.ts	Update query param and tRPC call to use bookingUid

Technical Details

The createInstantBooking response already includes both bookingId and bookingUid. This change uses the uid consistently throughout the instant booking flow.

How should this be tested?

1. Create an instant booking
2. Verify the location is retrieved correctly after booking is accepted
3. Verify URL uses bookingUid parameter

Mandatory Tasks

• 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
• I confirm automated tests are in place that prove my fix is effective or that my feature works.
• Manually tested locally. No automated test coverage exists for this endpoint currently. Tests will be added in a follow-up PR.

[cubic-dev-ai]

No issues found across 3 files

[volnei]

We need to add some tests on follow up PRs 🙏