remove draft state check from announcement broadcast policy

fixes CNVS-17975

test plan
- create an announcement with a delay post at date
- wait for delay post time
- ensure that announcement notification is sent

Change-Id: Ic6186de76c45622e8af7f33b8059c2262eb03003
Reviewed-on: https://gerrit.instructure.com/47682
Tested-by: Jenkins
Reviewed-by: Matthew Wheeler <mwheeler@instructure.com>
QA-Review: Steven Shepherd <sshepherd@instructure.com>
Product-Review: Joel Hough <joel@instructure.com>

Author: JoelHough

app/models/announcement.rb

@@ -67,15 +67,15 @@ def respect_context_lock_rules
     whenever { |record|
       record.context.available? and
         !record.context.concluded? and
-      ((record.just_created and !(record.post_delayed? || record.unpublished?)) || record.changed_state(:active, record.draft_state_enabled? ? :unpublished : :post_delayed))
+        ((record.just_created and !(record.post_delayed? || record.unpublished?)) || record.changed_state(:active, :unpublished) || record.changed_state(:active, :post_delayed))
     }
 
     dispatch :announcement_created_by_you
     to { user }
     whenever { |record|
       record.context.available? and
         !record.context.concluded? and
-        ((record.just_created and !(record.post_delayed? || record.unpublished?)) || record.changed_state(:active, record.draft_state_enabled? ? :unpublished : :post_delayed))
+        ((record.just_created and !(record.post_delayed? || record.unpublished?)) || record.changed_state(:active, :unpublished) || record.changed_state(:active, :post_delayed))
     }
   end