* feat: add validation for null values in bookingFieldsResponses - Add test case to verify 400 error when bookingFieldsResponses contains null values - Create ValidateBookingFieldsResponses decorator to reject null values in booking field responses - Apply validator to CreateBookingInput_2024_08_13.bookingFieldsResponses property - Ensure all booking field response values are non-null strings * feat: transform null values to empty strings in bookingFieldsResponses - Remove ValidateBookingFieldsResponses validator that rejected null values - Add Transform decorator to convert null values to empty strings in bookingFieldsResponses - Update test to verify null values are transformed to empty strings instead of returning 400 error * remove extra spaces * test: add rescheduleReason null value test case --------- Co-authored-by: Morgan <33722304+ThyMinimalDev@users.noreply.github.com>