Log form number and file size for form upload submissions (#20061)

Author: Thrillberg

modules/simple_forms_api/app/controllers/simple_forms_api/v1/scanned_form_uploads_controller.rb

@@ -34,7 +34,12 @@ def upload_response
         stamper.stamp_pdf
         metadata = validated_metadata
         status, confirmation_number = upload_pdf(file_path, metadata)
+        file_size = File.size(file_path).to_f / (2**20)
 
+        Rails.logger.info(
+          'Simple forms api - scanned form uploaded',
+          { form_number: params[:form_number], status:, confirmation_number:, file_size: }
+        )
         { confirmation_number:, status: }
       end