DOCS-12086: 4.2 view and out restriction - explicitly mention nested pipelines (revert the revert but fix docs number)

This reverts commit 2e963f1.

Author: Kay Kim

source/includes/extracts-views.yaml

@@ -176,5 +176,9 @@ ref: views-restriction-out
 content: |
 
    Starting in MongoDB 4.2, the view definition ``pipeline`` cannot
-   include the :pipeline:`$out` stage.
+   include the :pipeline:`$out` stage. If the view definition includes
+   nested pipeline (e.g. the view definition includes
+   :pipeline:`$lookup` or :pipeline:`$facet` stage), this
+   :pipeline:`$out` stage restriction applies to the nested pipelines
+   as well.
 ...

source/reference/operator/aggregation/out.txt

@@ -308,7 +308,10 @@ Views
 .. versionadded:: 4.2
 
 The :pipeline:`$out` stage is not allowed as part of a :doc:`view
-definition </core/views>`.
+definition </core/views>`. If the view definition includes nested
+pipeline (e.g. the view definition includes :pipeline:`$lookup` or
+:pipeline:`$facet` stage), this :pipeline:`$out` stage restriction
+applies to the nested pipelines as well.
 
 ``linearizable`` Read Concern
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~