Merged PR 5427: data alert fix

# Description

Change in model `int_core__accommodation_to_product_bundle` to remove effective dates and use original start and end date.
Updated downstream models 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.
- [ ] 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.

data alert fix

Related work items: #30948

models/intermediate/core/schema.yml

@@ -2183,42 +2183,33 @@ models:
         description: |
           The name of the Product Bundle.
 
-      - name: original_starts_at_utc
+      - name: starts_at_utc
         data_type: timestamp
         description: |
           Timestamp of when this Product Bundle is assigned into an Accommodation was 
           active for the first time, according to the Backend.
-          Keep in mind that this timestamp can be before the migration of the user, thus 
-          effective_start_date_utc might be better for reporting and analysis purposes.
         data_tests:
           - not_null
 
-      - name: original_ends_at_utc
+      - name: ends_at_utc
         data_type: timestamp
         description: |
           Timestamp of when this Product Bundle is assigned into an Accommodation was 
           active for the last time, according to the Backend. If null it means that 
           it's currently active.
-          Keep in mind that this timestamp can be before the migration of the user, thus 
-          effective_end_date_utc might be better for reporting and analysis purposes.
 
-      - name: effective_start_date_utc
+      - name: start_date_utc
         data_type: date
         description: |
-          Effective date of when this Product Bundle is assigned into an Accommodation was 
-          active for the first time. 
-          It takes into account the fact that a User needs to be migrated in order for 
-          the Product Bundle to be active in the Accommodation. In case of doubt, use this date.
+          The date when this Product Bundle was first assigned to the Accommodation.
         data_tests:
           - not_null
 
-      - name: effective_end_date_utc
+      - name: end_date_utc
         data_type: date
         description: |
-          Effective date of when this Product Bundle is assigned into an Accommodation was 
-          active for the last time. If null it means that it's currently active.
-          It takes into account the fact that a User needs to be migrated in order for 
-          the Product Bundle to be active in the Accommodation. In case of doubt, use this date.
+          The date when this Product Bundle was last active for the Accommodation.
+          If null, it means the Product Bundle is currently active.
 
       - name: has_no_end_date
         data_type: boolean