Change search indexing to use batches to minimize resource usage (#18451)

config/initializers/chewy.rb

@@ -13,15 +13,14 @@ Chewy.settings = {
   journal: false,
   user: user,
   password: password,
-  sidekiq: { queue: 'pull' },
 }
 
 # We use our own async strategy even outside the request-response
 # cycle, which takes care of checking if Elasticsearch is enabled
 # or not. However, mind that for the Rails console, the :urgent
 # strategy is set automatically with no way to override it.
-Chewy.root_strategy              = :custom_sidekiq
-Chewy.request_strategy           = :custom_sidekiq
+Chewy.root_strategy              = :mastodon
+Chewy.request_strategy           = :mastodon
 Chewy.use_after_commit_callbacks = false
 
 module Chewy