docs: Note on pre-aggregations schema name

Author: igorlukanin

docs/pages/product/configuration/reference/config.mdx

@@ -551,6 +551,13 @@ the schema name dynamically depending on the security context.
 Defaults to `dev_pre_aggregations` in [development mode][ref-development-mode]
 and `prod_pre_aggregations` in production.
 
+<InfoBox>
+
+In Cube Cloud, all [environments][ref-environments] share the same pre-aggregations schema name by default.
+This allows reusing pre-aggregations across environments, saving both time and cost.
+
+</InfoBox>
+
 This configuration option can also be set using the `CUBEJS_PRE_AGGREGATIONS_SCHEMA`
 environment variable.
 
@@ -1543,3 +1550,4 @@ If not defined, Cube will lookup for environment variable
 [ref-dax-api]: /product/apis-integrations/dax-api
 [ref-mdx-api]: /product/apis-integrations/mdx-api
 [ref-ntlm]: /product/auth/methods/ntlm
+[ref-environments]: /product/workspace/environments

docs/pages/product/configuration/reference/environment-variables.mdx

@@ -1077,6 +1077,13 @@ to use for storing pre-aggregations.
 It can be also set using the [`pre_aggregations_schema` configuration
 option](/product/configuration/reference/config#pre_aggregations_schema).
 
+<InfoBox>
+
+In Cube Cloud, all [environments][ref-environments] share the same pre-aggregations schema name by default.
+This allows reusing pre-aggregations across environments, saving both time and cost.
+
+</InfoBox>
+
 ## `CUBEJS_PRE_AGGREGATIONS_ALLOW_NON_STRICT_DATE_RANGE_MATCH`
 
 If `true`, allows non-strict date range matching for pre-aggregations by default.
@@ -1799,4 +1806,5 @@ The port for a Cube deployment to listen to API connections on.
 [ref-multi-stage-calculations]: /product/data-modeling/concepts/multi-stage-calculations
 [ref-folders]: /product/data-modeling/reference/view#folders
 [ref-dataviz-tools]: /product/configuration/visualization-tools
-[ref-context-to-app-id]: /product/configuration/reference/config#context_to_app_id
+[ref-context-to-app-id]: /product/configuration/reference/config#context_to_app_id
+[ref-environments]: /product/workspace/environments