tests: restore image_saving helper require for image generation specs

Author: cursoragent

spec/spec_helper.rb

@@ -17,5 +17,6 @@
 require_relative 'support/vcr_configuration'
 require_relative 'support/models_to_test'
 require_relative 'support/streaming_error_helpers'
+require_relative 'support/image_saving'
 require_relative 'support/provider_capabilities_helper'
 require_relative 'support/red_candle_loader'