CLDC-2862: try disabling schduled job in maintenance mode

config/initializers/sidekiq.rb

@@ -32,8 +32,10 @@ Redis.silence_deprecations = true
 
 Sidekiq.configure_server do |config|
   config.on(:startup) do
+    unless FeatureToggle.maintenance_mode_enabled?
       Sidekiq::Cron::Job.load_from_hash YAML.load_file("config/sidekiq_cron_schedule.yml")
     end
+  end
 
   config.on(:shutdown) do
     Sidekiq::CLI.instance.launcher.quiet