Merged PR 4298: Split Check-Out bookings by Dash Source

# Description

Adds new category Dash Source for Check-Out bookings KPIs

# 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: #27356

macros/business_kpis_configuration.sql

@@ -131,7 +131,7 @@ Provides a general assignement for the Dimensions available for each KPI
     {% endif %}
 
     {# Add entity-specific dimensions #}
-    {% if entity_name == "CREATED_BOOKINGS" %}
+    {% if entity_name in ["CREATED_BOOKINGS", "CHECK_OUT_BOOKINGS"] %}
         {% set additional_dimensions = additional_dimensions + [dim_dash()] %}
     {% endif %}