Merged PR 4130: Propagate aggregations to xero sales reporting

# Description

Propagates the xero aggregations to the reporting model of xero__sales_denom_mart

# 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: #26618

models/reporting/xero/schema.yml

@@ -1364,3 +1364,19 @@ models:
       - name: contact_name
         data_type: character varying
         description: ""
+
+      - name: accounting_root_aggregation
+        data_type: character varying
+        description: |
+          The root aggregation per account code. This is the main
+          aggregation that is used to retrieve low-level data.
+
+      - name: accounting_kpis_aggregation
+        data_type: character varying
+        description: |
+          The default macro-aggregation for Invoiced KPIs.
+
+      - name: accounting_financial_aggregation
+        data_type: character varying
+        description: |
+          The default macro-aggregation for Financial reporting.