Remove spacing interval between soft deleted projects

Fixes an issue whereby on a day where
there are more than a small number of
projects waiting for deletion, they could
be scheduled for deletion weeks or months
in the future.

ee/app/workers/adjourned_projects_deletion_cron_worker.rb

@@ -4,7 +4,7 @@ class AdjournedProjectsDeletionCronWorker # rubocop:disable Scalability/Idempote
   include ApplicationWorker
   include CronjobQueue
 
-  INTERVAL = 5.minutes.to_i
+  INTERVAL = 10.seconds.to_i
 
   feature_category :authentication_and_authorization
 

ee/changelogs/unreleased/212645-deleted-projects-does-not-get-deleted.yml

+---
+title: Remove spacing interval between soft deleted projects
+merge_request: 35046
+author:
+type: fixed

ee/spec/workers/adjourned_projects_deletion_cron_worker_spec.rb

@@ -6,8 +6,8 @@ RSpec.describe AdjournedProjectsDeletionCronWorker do
   describe "#perform" do
     subject(:worker) { described_class.new }
 
-    let(:user) { create(:user)}
-    let(:marked_for_deletion_at) { 14.days.ago }
+    let_it_be(:user) { create(:user)}
+    let_it_be(:marked_for_deletion_at) { 14.days.ago }
     let!(:project_marked_for_deletion) { create(:project, marked_for_deletion_at: marked_for_deletion_at, deleting_user: user) }
 
     before do
@@ -21,6 +21,17 @@ RSpec.describe AdjournedProjectsDeletionCronWorker do
       worker.perform
     end
 
+    context 'when two projects are scheduled for deletion' do
+      let_it_be(:project_marked_for_deletion_two) { create(:project, marked_for_deletion_at: marked_for_deletion_at, deleting_user: user) }
+
+      it 'schedules the second job 10 seconds after the first' do
+        expect(AdjournedProjectDeletionWorker).to receive(:perform_in).with(10, project_marked_for_deletion.id)
+        expect(AdjournedProjectDeletionWorker).to receive(:perform_in).with(0, project_marked_for_deletion_two.id)
+
+        worker.perform
+      end
+    end
+
     context 'marked for deletion exectly before number of days from settings' do
       let(:marked_for_deletion_at) { 7.days.ago }