Workaround the ActiveRecord / Marshal serialization bug on Ruby 3.2 (#24142)

Co-authored-by: Jean Boussier <jean.boussier@gmail.com>

config/environments/test.rb

@@ -51,6 +51,12 @@ Rails.application.configure do
 
   config.i18n.default_locale = :en
   config.i18n.fallbacks = true
+
+  config.to_prepare do
+    # Force Status to always be SHAPE_TOO_COMPLEX
+    # Ref: https://github.com/mastodon/mastodon/issues/23644
+    10.times { |i| Status.allocate.instance_variable_set(:"@ivar_#{i}", nil) }
+  end
 end
 
 Paperclip::Attachment.default_options[:path] = "#{Rails.root}/spec/test_files/:class/:id_partition/:style.:extension"