Allow native types to handle a list of tags

make it possible to concatenate fragments identified by different tags
into a file; allow parameter "tag" of type "concat_file" to be a string
or array of strings therefore

additionally handle nonexistent tags (as being optional in both native
types) correctly

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: skyamgarp

lib/puppet/type/concat_file.rb

@@ -204,7 +204,7 @@ def fragments
       next unless resource.is_a?(Puppet::Type.type(:concat_fragment))
 
       if resource[:target] == self[:path] || resource[:target] == title ||
-         ((resource[:tag] && self[:tag]) && (resource[:tag] == self[:tag] || self[:tag].include?(resource[:tag])))
+         ((resource[:tag] && self[:tag]) && (resource[:tag] == self[:tag] || self[:tag].is_a?(Array) && self[:tag].include?(resource[:tag])))
         resource
       end
     }.compact

lib/puppet/type/concat_fragment.rb

@@ -75,7 +75,7 @@
       next unless resource.is_a?(Puppet::Type.type(:concat_file))
 
       resource[:path] == self[:target] || resource.title == self[:target] ||
-        ((resource[:tag] && self[:tag]) && (resource[:tag] == self[:tag] || resource[:tag].include?(self[:tag])))
+        ((resource[:tag] && self[:tag]) && (resource[:tag] == self[:tag] || resource[:tag].is_a?(Array) && resource[:tag].include?(self[:tag])))
     end
 
     if found.empty?