fix: set custom filter count in redis (#7164)

app/services/conversations/filter_service.rb

@@ -1,6 +1,11 @@
 class Conversations::FilterService < FilterService
   ATTRIBUTE_MODEL = 'conversation_attribute'.freeze
 
+  def initialize(params, user, filter_account = nil)
+    @filter_account = filter_account
+    super(params, user)
+  end
+
   def perform
     @conversations = conversation_query_builder
     mine_count, unassigned_count, all_count, = set_count_for_all_conversations
@@ -49,7 +54,8 @@ class Conversations::FilterService < FilterService
   end
 
   def base_relation
-    Current.account.conversations.left_outer_joins(:labels)
+    account = @filter_account || Current.account
+    account.conversations.left_outer_joins(:labels)
   end
 
   def current_page