Fix `subscribed` with no pattern to subscribe all messages

This is a regression for #36184.

And also, add new `monotonic` argument to the last of the method
signature rather than the first.

1 files changed, 3 insertions, 3 deletions

diff --git a/activesupport/lib/active_support/notifications/fanout.rb b/activesupport/lib/active_support/notifications/fanout.rb
index c37bec4ee5..aa602329ec 100644
--- a/activesupport/lib/active_support/notifications/fanout.rb
+++ b/activesupport/lib/active_support/notifications/fanout.rb
@@ -20,8 +20,8 @@ module ActiveSupport
         super
       end
 
-      def subscribe(pattern = nil, callable = nil, monotonic = false, &block)
-        subscriber = Subscribers.new(monotonic, pattern, callable || block)
+      def subscribe(pattern = nil, callable = nil, monotonic: false, &block)
+        subscriber = Subscribers.new(pattern, callable || block, monotonic)
         synchronize do
           if String === pattern
             @string_subscribers[pattern] << subscriber
@@ -84,7 +84,7 @@ module ActiveSupport
       end
 
       module Subscribers # :nodoc:
-        def self.new(monotonic, pattern, listener)
+        def self.new(pattern, listener, monotonic)
           subscriber_class = monotonic ? MonotonicTimed : Timed
 
           if listener.respond_to?(:start) && listener.respond_to?(:finish)