Change how unconfirmed accounts are displayed in admin UI (#17874)

Fix #17815

app/models/account.rb

@@ -128,13 +128,13 @@ class Account < ApplicationRecord
            :approved?,
            :pending?,
            :disabled?,
+           :unconfirmed?,
            :unconfirmed_or_pending?,
            :role,
            :admin?,
            :moderator?,
            :staff?,
            :locale,
-           :hides_network?,
            :shows_application?,
            to: :user,
            prefix: true,

app/models/user.rb

@@ -208,8 +208,12 @@ class User < ApplicationRecord
     confirmed? && approved? && !disabled? && !account.suspended? && !account.memorial? && account.moved_to_account_id.nil?
   end
 
+  def unconfirmed?
+    !confirmed?
+  end
+
   def unconfirmed_or_pending?
-    !(confirmed? && approved?)
+    unconfirmed? || pending?
   end
 
   def inactive_message