Change logging of sent submission to be more like logging of submit

Refactor the `submission_sent` event logging so that it is similar to
the logging of the `submit` event; add a method for it to the
LogEventService, change the event name depending on whether the
submission is for a form preview or not, and log the submission type and
format.

Author: lfdebrux

app/jobs/send_submission_job.rb

@@ -19,7 +19,7 @@ def perform(submission)
     )
 
     milliseconds_since_scheduled = (sent_at - scheduled_at_or_enqueued_at).in_milliseconds.round
-    EventLogger.log_form_event("submission_sent", { milliseconds_since_scheduled: })
+    EventLogger.log_submission_sent(submission, milliseconds_since_scheduled:)
     CloudWatchService.record_submission_sent_metric(milliseconds_since_scheduled)
   rescue StandardError
     CloudWatchService.record_job_failure_metric(self.class.name)

app/services/log_event_service.rb

@@ -29,6 +29,19 @@ def self.log_submit(context, requested_email_confirmation:, preview:, submission
     end
   end
 
+  def self.log_submission_sent(submission, **kwargs)
+    additional_context = {
+      submission_type: submission.form.submission_type,
+      submission_format: submission.form.submission_format,
+    }.merge(kwargs)
+
+    if submission.preview?
+      EventLogger.log_form_event("preview_submission_sent", additional_context)
+    else
+      EventLogger.log_form_event("submission_sent", additional_context)
+    end
+  end
+
   def log_page_save
     EventLogger.log_page_event(log_event, @step.question.question_text, skipped_question?)
     if is_starting_form?