Merged PR 3810: Adds is_end_of_month_or_yesterday for Main KPIs

# Description

Adds `is_end_of_month_or_yesterday` for Main KPIs.
Apparently, the fact that we do not show the ongoing value of the month on some tabs of Main KPIs is the main blocker for Ben C to consistently use Main KPIs, which he actually retrieves from the SH legacy reporting. Since I'm sceptical about the data shown there, I want to remove this blocker.
It will require a small PR on PBI as well.

# 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.
- [NA] 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: #25342

models/intermediate/cross/int_mtd_aggregated_metrics.sql

@@ -452,6 +452,7 @@ with
         day,
         is_end_of_month,
         is_current_month,
+        is_end_of_month_or_yesterday,
         first_day_month,
         date,
         dimension,