cleanup(webhooks): remove routing form webhook support

[romitg2]

What this does

• removes the remaining internal webhook plumbing for unsupported routing-form events
• drops form webhook DTOs, producer queue methods, queued task payloads, and related test scaffolding
• keeps enum fallback mapping in the payload builder factory until enum/schema cleanup lands

Validation

yarn vitest run packages/features/webhooks/lib/__tests__/consumer/WebhookTaskConsumer.test.ts packages/features/webhooks/lib/service/__tests__/WebhookTaskerProducerService.test.ts packages/features/bookings/lib/handleNewBooking/test/webhook-producer-booking-requested.test.ts

Result: passed (34 tests)

yarn type-check:ci --force

Result: passed

[github-actions]

Hey there and thank you for opening this pull request! 👋🏼

We require pull request titles to follow the Conventional Commits specification and it looks like your proposed title needs to be adjusted.

Details:

Unknown release type "cleanup" found in pull request title "cleanup(webhooks): remove routing form webhook support". 

Available types:
 - feat: A new feature
 - fix: A bug fix
 - docs: Documentation only changes
 - style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
 - refactor: A code change that neither fixes a bug nor adds a feature
 - perf: A code change that improves performance
 - test: Adding missing tests or correcting existing tests
 - build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
 - ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
 - chore: Other changes that don't modify src or test files
 - revert: Reverts a previous commit

[github-actions]

This PR has been marked as stale due to inactivity. If you're still working on it or need any help, please let us know or update the PR to keep it active.