Add projectId filter to engagement filter block

It is repeated twice now in the current query which already matches the project,
but another entry point could not have applied that filter.
I don't think it is double the work for the DB.

Author: CarsonF

src/components/engagement/engagement.repository.ts

@@ -521,7 +521,11 @@ export const engagementFilters = filter.define(() => EngagementFilters, {
       })!,
     ),
   }),
-  projectId: filter.skip,
+  projectId: filter.pathExists((id) => [
+    node('node'),
+    relation('in', '', 'engagement'),
+    node('project', 'Project', { id }),
+  ]),
   partnerId: filter.pathExists((id) => [
     node('node'),
     relation('in', '', 'engagement'),