Merged PR 4542: New dash guest agreement fix

# Description

Small fix for the new Guest Agreement service in New Dash

# 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.
- [ ] I have checked for DRY opportunities with other models and docs.
- [ ] I've picked the right materialization for the affected models.

# Other

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

new dash guest agreement fix

Related work items: #28068

models/intermediate/core/schema.yml

@@ -3775,8 +3775,8 @@ models:
       - name: service_business_type
         data_type: string
         description: |
-          Identifies the service type (Screening, Deposit Management, Protection) 
+          Identifies the service type (Screening, Deposit Management, Protection 
-          according to New Pricing documentation.
+          or Guest Agreement) according to New Pricing documentation.
           Cannot be null.
         data_tests:
           - not_null
@@ -3785,6 +3785,7 @@ models:
                 - SCREENING
                 - PROTECTION
                 - DEPOSIT_MANAGEMENT
+                - GUEST_AGREEMENT
                 - UNKNOWN
 
       - name: service_source

models/staging/core/schema.yml

@@ -567,6 +567,7 @@ models:
               values:
                 - "SCREENING"
                 - "DEPOSIT_MANAGEMENT"
+                - "GUEST_AGREEMENT"
 
       - name: is_default_service
         data_type: boolean

models/staging/core/stg_core__product_service.sql

@@ -35,6 +35,12 @@ select
                 9  -- 'WAIVER PRO'
             )
         then 'DEPOSIT_MANAGEMENT'
+        when
+            id_product_service in (
+
+                10  -- 'GUEST AGREEMENT'
+            )
+        then 'GUEST_AGREEMENT'
         else null
     end as service_business_type,
     product_service_name,