Set successfully_enqueued for jobs enqueued in batch and return enqueued count

This is necessary so that the log subscriber doesn't crash. I had missed this
pull request rails/rails#47844, merged after the original
feature was added to Active Job.

Author: rosa

app/models/solid_queue/job.rb

@@ -15,9 +15,12 @@ def enqueue_all(active_jobs)
           prepare_all_for_execution(jobs).tap do |enqueued_jobs|
             enqueued_jobs.each do |enqueued_job|
               active_jobs_by_job_id[enqueued_job.active_job_id].provider_job_id = enqueued_job.id
+              active_jobs_by_job_id[enqueued_job.active_job_id].successfully_enqueued = true
             end
           end
         end
+
+        active_jobs.count(&:successfully_enqueued?)
       end
 
       def enqueue(active_job, scheduled_at: Time.current)

test/models/solid_queue/job_test.rb

@@ -122,6 +122,7 @@ class NonOverlappingGroupedJob2 < NonOverlappingJob
 
     jobs = SolidQueue::Job.last(9)
     assert_equal active_jobs.map(&:provider_job_id).sort, jobs.pluck(:id).sort
+    assert active_jobs.all?(&:successfully_enqueued?)
   end
 
   test "block jobs when concurrency limits are reached" do