Track event when job token is authorized for a project with disabled scope

What does this MR do and why?

Addresses item 8 from #478522 (closed):

8. Unique number of projects receiving authentications while having disabled scope and distinguish between same-project vs cross-project authentications - helps distinguish how many projects use CI_JOB_TOKEN but there is no need to populate the allowlist (same project) vs the cross-project where we need to populate the allowlist. The first numbers will also help calculate the number of projects not impacted at all (inactive or without inbound CI_JOB_TOKEN)

Also updated the module Gitlab::InternalEventsTracking to make track_internal_event usable inside class methods.

lib/gitlab/internal_events_tracking.rb

@@ -2,16 +2,18 @@
 
 module Gitlab
   module InternalEventsTracking
-    extend ActiveSupport::Concern
-
-    class_methods do
+    module ClassMethods
       def track_internal_event(event_name, event_args)
         Gitlab::InternalEvents.track_event(event_name, category: name, **event_args)
       end
     end
 
-    included do
-      delegate :track_internal_event, to: :class
+    def self.included(base)
+      base.extend(ClassMethods) # Add class methods to the including class
+    end
+
+    def track_internal_event(event_name, event_args)
+      self.class.track_internal_event(event_name, event_args)
     end
   end
 end