Merged PR 2583: Invoicing metrics per customer segmentation

# Description

Silly change:

* Modifies `int_core__mtd_guest_payments_metrics` to apply the proper key on date, dimension and dimension_value.
* -> *The weird thing is that the previous dbt test I run worked well. Is it possible that the configuration in the schema file prevails on top of the model configuration? I thought it was the other way around...*

Main changes:

* Modifies `int_xero__mtd_invoicing_metrics` to include the customer segmentation based on listings.
* `schema.yaml` is also affected including new fields and tests
* Added the macro to retrieve the production dimension in `int_core__mtd_vs_previous_year_metrics` to avoid propagating this upwards and messing up with the data display.

Overall, follows a similar strategy as we did for Booking, Guest Journey, Deal, Accommodation and Guest Payments metrics. For reference, [here's the previous PR on Guest Payments](https://guardhog.visualstudio.com/Data/_git/data-dwh-dbt-project/pullrequest/2580).

This is the last PR on the source models for KPIs. Will follow: propagation + exposure

# Checklist

- [X] The edited models and dependants run properly with production data.
* **Important note**: this segmentation provides null values for all API-related KPIs. Makes sense, since the 4 deal id we have for APIs do NOT have, or have had, a listing linked to them. I'd say it's not a blocker.
- [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: #19325

models/intermediate/cross/int_mtd_vs_previous_year_metrics.sql

@@ -29,6 +29,7 @@ with
     ),
     int_xero__mtd_invoicing_metrics as (
         select * from {{ ref("int_xero__mtd_invoicing_metrics") }}
+        where dimension in ({{ production_dimensions }})
     ),
     int_dates_mtd as (select * from {{ ref("int_dates_mtd") }}),