Use the same code to detect membership

Author: klaustopher

modules/costs/app/models/hourly_rate.rb

@@ -63,7 +63,7 @@ def self.history_for_user(usr) # rubocop:disable Metrics/AbcSize
 
     projects_with_costs.each do |project|
       project_rates = rates_by_project.fetch(project, [])
-      next if project_rates.empty? && usr.members.none? { |m| m.project_id == project.id }
+      next if project_rates.empty? && usr.projects.exclude?(project)
 
       rates[project] = project_rates
     end