Fixes #37242 - Fix live output appearing multiple times

The result of calling continuous_output was not persisted, so the
original code didn't make much sense. ContinuousOutput#sort! returns the
same thing as ContinuousOutput#raw_outputs so we can skip the second
line completely.

Upsert_all was updating the already existing values, so exit_status got
updated multiple times with different timestamps. Insert_all should just
skip over the already existing values.

app/lib/actions/remote_execution/proxy_action.rb

@@ -43,7 +43,7 @@ def process_proxy_data(data)
           }
         end
         events.each_slice(1000) do |batch|
-          TemplateInvocationEvent.upsert_all(batch, unique_by: [:template_invocation_id, :sequence_id]) # rubocop:disable Rails/SkipsModelValidations
+          TemplateInvocationEvent.insert_all(batch, unique_by: [:template_invocation_id, :sequence_id]) # rubocop:disable Rails/SkipsModelValidations
         end
       end
     end

app/lib/actions/remote_execution/run_host_job.rb

@@ -98,7 +98,6 @@ def check_exit_status
 
       def live_output
         continuous_output.sort!
-        continuous_output.raw_outputs
       end
 
       def humanized_input