Merged PR 4425: Reworks Billable Bookings metrics

# Description

Changes:
* On Est. Billable Bookings, keeps previous logic for Old Dash while assuming the first billable service for New Dash
* Adds a Billable Check Out Bookings in Check Out bookings, as defined in the requirements.

# Checklist

- [X] The edited models and dependants run properly with production data.
- [X] The edited models are sufficiently documented.
- [X] The edited models contain PK tests, and I've ran and passed them.
- [X] I have checked for DRY opportunities with other models and docs.
- [X] I've picked the right materialization for the affected models.

# Other

- [ ] Check if a full-refresh is required after this PR is merged.

Related work items: #27619

models/intermediate/kpis/int_kpis__metric_daily_billable_bookings.sql

@@ -1,24 +1,10 @@
 {{ config(materialized="table", unique_key=["date", "id_deal", "business_scope"]) }}
+-- OLD DASH --
 select
     -- Unique Key --
     icb.booking_fee_charge_date_utc as date,
     coalesce(icuh.id_deal, 'UNSET') as id_deal,
-    -- ORP here: I'm expecting this to change according to the definition of Billable
-    -- Bookings expected for New Dash. This is just a temporary placeholder in the
-    -- same fashion as Booking metrics.
-    case
-        -- New Dash users with a booking and a deal
-        when
-            icbs.id_booking is not null
-            and icbs.is_user_in_new_dash = true
-            and icbs.is_missing_id_deal = false
-        then 'New Dash'
-        -- Old Dash users if there is no booking or the user is not in the new dash
-        when icbs.id_booking is null or icbs.is_user_in_new_dash = false
-        then 'Old Dash'
-        -- Rest of the cases, includes KYG Lite users
-        else 'UNSET'
-    end as business_scope,
+    'Old Dash' as business_scope,
     -- Dimensions --
     coalesce(
         icd.main_billing_country_iso_3_per_deal, 'UNSET'
@@ -38,5 +24,38 @@ left join
     and icb.booking_fee_charge_date_utc = icmas.date
 left join
     {{ ref("int_core__booking_summary") }} as icbs on icb.id_booking = icbs.id_booking
-where icb.is_duplicate_booking = false and icb.booking_fee_charge_date_utc is not null
+where
+    icb.is_duplicate_booking = false
+    and icb.booking_fee_charge_date_utc is not null
+    -- Exclude any New Dash bookings
+    and (icbs.id_booking is null or icbs.is_user_in_new_dash = false)
+group by 1, 2, 3, 4, 5
+
+union all
+
+-- NEW DASH --
+select
+    -- Unique Key --
+    icbs.service_first_billable_date_utc as date,
+    icbs.id_deal,
+    'New Dash' as business_scope,
+    -- Dimensions --
+    coalesce(
+        icd.main_billing_country_iso_3_per_deal, 'UNSET'
+    ) as main_billing_country_iso_3_per_deal,
+    coalesce(
+        icmas.active_accommodations_per_deal_segmentation, 'UNSET'
+    ) as active_accommodations_per_deal_segmentation,
+    -- Metrics --
+    count(distinct icbs.id_booking) as billable_bookings
+from {{ ref("int_core__booking_summary") }} icbs
+left join {{ ref("int_core__deal") }} as icd on icbs.id_deal = icd.id_deal
+left join
+    {{ ref("int_kpis__dimension_daily_accommodation") }} as icmas
+    on icbs.id_deal = icmas.id_deal
+    and icbs.service_first_billable_date_utc = icmas.date
+where
+    icbs.is_user_in_new_dash = true
+    and icbs.is_missing_id_deal = false
+    and icbs.is_booking_billable = true
 group by 1, 2, 3, 4, 5