jobs: update jobs dashboard to work with GoodJob.

Update the jobs dashboard at /delayed_jobs to work with GoodJob instead
of DelayedJob.

test/factories/delayed_job.rb

@@ -1,5 +0,0 @@
-FactoryBot.define do
-  factory :delayed_job, class: Delayed::Job do
-    handler { "" }
-  end
-end

test/factories/good_job.rb

@@ -0,0 +1,15 @@
+FactoryBot.define do
+  factory :good_job, class: GoodJob::ActiveJobJob do
+    transient do
+      job { VacuumDatabaseJob.new }
+    end
+
+    id { SecureRandom.uuid }
+    active_job_id { job.job_id }
+    queue_name { job.queue_name }
+    priority { job.priority }
+    serialized_params do
+      { job_class: job.class.name, **job.as_json }
+    end
+  end
+end