perf(projects): use unusedFeatures in more places (#82065)

use the `ununusedFeatures` collapse parameter in more places. see some
slowness due to teams serializer having to render all of the project
feature flags.

src/sentry/api/endpoints/project_team_details.py

@@ -90,7 +90,12 @@ def post(self, request: Request, project, team: Team) -> Response:
             event=audit_log.get_event_id("PROJECT_TEAM_ADD"),
             data={"team_slug": team.slug, "project_slug": project.slug},
         )
-        return Response(serialize(project, request.user, ProjectWithTeamSerializer()), status=201)
+        return Response(
+            serialize(
+                project, request.user, ProjectWithTeamSerializer(collapse=["unusedFeatures"])
+            ),
+            status=201,
+        )
 
     @extend_schema(
         operation_id="Delete a Team from a Project",

src/sentry/api/serializers/models/team.py

@@ -183,6 +183,8 @@ def _collapse(self, key: str) -> bool:
     def get_attrs(
         self, item_list: Sequence[Team], user: User, **kwargs: Any
     ) -> dict[Team, dict[str, Any]]:
+        from sentry.api.serializers.models.project import ProjectSerializer
+
         request = env.request
         org_ids = {t.organization_id for t in item_list}
 
@@ -244,7 +246,11 @@ def get_attrs(
             projects = [pt.project for pt in project_teams]
 
             projects_by_id = {
-                project.id: data for project, data in zip(projects, serialize(projects, user))
+                project.id: data
+                for project, data in zip(
+                    projects,
+                    serialize(projects, user, ProjectSerializer(collapse=["unusedFeatures"])),
+                )
             }
 
             project_map = defaultdict(list)

tests/sentry/api/serializers/test_team.py

@@ -3,6 +3,7 @@
 from django.conf import settings
 
 from sentry.api.serializers import serialize
+from sentry.api.serializers.models.project import ProjectSerializer
 from sentry.api.serializers.models.team import TeamSCIMSerializer, TeamWithProjectsSerializer
 from sentry.app import env
 from sentry.models.organizationmember import InviteStatus
@@ -252,7 +253,9 @@ def test_simple(self):
         project2 = self.create_project(teams=[team], organization=organization, name="bar")
 
         result = serialize(team, user, TeamWithProjectsSerializer())
-        serialized_projects = serialize([project2, project], user)
+        serialized_projects = serialize(
+            [project2, project], user, ProjectSerializer(collapse=["unusedFeatures"])
+        )
 
         assert result == {
             "id": str(team.id),