implications: count 'queued' implications as active.

Bug: implications that were approved but that were still in the 'queued'
state were not seen as active yet, which led to the transitivity
validation passing because it didn't include queued implications.

app/models/tag_implication.rb

@@ -32,7 +32,7 @@ class TagImplication < ApplicationRecord
     module ClassMethods
       # assumes names are normalized
       def with_descendants(names)
-        (names + where("antecedent_name in (?) and status in (?)", names, ["active", "processing"]).map(&:descendant_names_array)).flatten.uniq
+        (names + active.where(antecedent_name: names).flat_map(&:descendant_names_array)).uniq
       end
 
       def automatic_tags_for(names)
@@ -49,7 +49,7 @@ class TagImplication < ApplicationRecord
 
           until children.empty?
             all.concat(children)
-            children = TagImplication.where("antecedent_name IN (?) and status in (?)", children, ["active", "processing"]).map(&:consequent_name)
+            children = TagImplication.active.where(antecedent_name: children).pluck(:consequent_name)
           end
         end.sort.uniq
       end
@@ -97,7 +97,7 @@ class TagImplication < ApplicationRecord
     end
 
     def active
-      where("status IN (?)", ["active", "processing"])
+      where(status: %w[active processing queued])
     end
 
     def search(params)