Improve Group Security Dashboard performance

This is a temporary change that will go away with
Standalone Vulnerabilities
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/27943
For Groups, supply all the project ids to force usage of the SQL index
as when we han no project id supplied, we want all projects.

ee/app/controllers/concerns/project_vulnerability_findings_actions.rb

@@ -37,6 +37,20 @@ module ProjectVulnerabilityFindingsActions
   private
 
   def filter_params
-    params.permit(:scope, report_type: [], confidence: [], project_id: [], severity: [])
+    params.permit(
+      :scope,
+      report_type: [],
+      confidence: [],
+      project_id: [],
+      severity: []
+    ).tap do |vulnerability_params|
+      if vulnerable.is_a?(Group) && params[:project_id].blank?
+        # This is a temporary change that will go away with Standalone Vulnerabilities
+        # https://gitlab.com/gitlab-org/gitlab/-/issues/13561
+        # For Groups, supply all the project ids to force usage of the SQL index
+        # as when we have no project ids supplied, we want all projects.
+        vulnerability_params.merge!(project_id: vulnerable.projects.pluck_primary_key)
+      end
+    end
   end
 end

ee/changelogs/unreleased/rf-fix-group-dashboard-timeout.yml

+---
+title: Improve Group Security Dashboard performance
+merge_request: 27959
+author:
+type: performance