Fix deprecation behavior

spec/datadog/tracing/contrib/rails/support/deprecation.rb

@@ -5,10 +5,27 @@ def raise_on_rails_deprecation!
   #      of which warnings are allowed, in case we need
   #      such feature.
   #
-  # In Rails 7.1 calling ActiveSupport::Deprecation.behavior= is deprecated
-  if defined?(Rails) && Rails.gem_version >= Gem::Version.new(7.1)
+  # In Rails 7.1 calling ActiveSupport::Deprecation.behavior= raises an exception.
+  # The new way of configuring deprecation is per framework, and each framework has
+  # its own deprecator object. If none of the frameworks have a deprecator object,
+  # we must be on an older version of Rails, in which case we can configure the
+  # deprecation behavior on ActiveSupport globally.
+  executed = false
+  if defined?(ActiveRecord) && ActiveRecord.respond_to?(:deprecator)
+    ActiveRecord.deprecator.behavior = :raise
+    executed = true
+  end
+  if defined?(ActiveModel) && ActiveModel.respond_to?(:deprecator)
+    ActiveModel.deprecator.behavior = :raise
+    executed = true
+  end
+  if defined?(ActionCable) && ActionCable.respond_to?(:deprecator)
+    ActionCable.deprecator.behavior = :raise
+    executed = true
+  end
+  if defined?(Rails) && Rails.respond_to?(:deprecator)
     Rails.deprecator.behavior = :raise
-  else
-    ActiveSupport::Deprecation.behavior = :raise
+    executed = true
   end
+  ActiveSupport::Deprecation.behavior = :raise if !executed
 end