(DOCSP-36560): Backport DOCSP-36534 to v7.0. (#84) (#85)

[BUILD](https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=65c4ed2f6b2f17c95a28f3ba)

I added a RN and updated the project page.

[STAGE:

RN](https://preview-mongodbcorryroot.gatsbyjs.io/ops-manager/DOCSP-36534/release-notes/application/#:~:text=Removes%20ability%20to%20delete%20a%20project%20that%20has%20managed%20deployments.)

[STAGE:

Projects](https://preview-mongodbcorryroot.gatsbyjs.io/ops-manager/DOCSP-36534/tutorial/manage-projects/#std-label-delete-project:~:text=You%20can%27t%20delete%20a%20project%20that%20has%20managed%20deployments.)

[JIRA](https://jira.mongodb.org/browse/DOCSP-36534)


[BUILD](https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=65c4e0ec6b2f17c95a254d1d)

Author: corryroot

source/release-notes/changelogs/ops-manager/changelog-onprem-v7.0.rst

@@ -21,6 +21,8 @@
   - ``Oplog Behind`` warning could be displayed for non-active shards.
   - ``LOW_APP_DB_FREE_SPACE_PERCENT`` alert was not working correctly.
   - Servers might display stale statuses in the |onprem| UI.
+- Removes ability to :ref:`delete a project <delete-project>` that has 
+  managed deployments.
 
 .. _opsmgr-server-7.0.1:
 

source/tutorial/manage-projects.txt

@@ -79,7 +79,8 @@ Delete One Project
 
    Deleting a project removes all the project's artifacts, including
    all monitoring data. |mms| no longer displays the project in
-   selection lists.
+   selection lists. You can't delete a project that has managed 
+   deployments.
 
    You can delete a project if: