rename project attributes page helper classes to match path

spec/features/admin/custom_fields/projects/create_in_section_spec.rb

@@ -34,7 +34,7 @@ require_relative "shared_context"
 RSpec.describe "Create project custom fields in sections", :js do
   include_context "with seeded project custom fields"
 
-  let(:cf_index_page) { Pages::Admin::CustomFields::CustomFieldsProjects::Index.new }
+  let(:cf_index_page) { Pages::Admin::Settings::ProjectCustomFields::Index.new }
 
   context "with insufficient permissions" do
     it "is not accessible" do

spec/features/admin/custom_fields/projects/index_spec.rb

@@ -34,7 +34,7 @@ require_relative "shared_context"
 RSpec.describe "List project custom fields", :js do
   include_context "with seeded project custom fields"
 
-  let(:cf_index_page) { Pages::Admin::CustomFields::CustomFieldsProjects::Index.new }
+  let(:cf_index_page) { Pages::Admin::Settings::ProjectCustomFields::Index.new }
 
   context "with insufficient permissions" do
     it "is not accessible" do

spec/features/admin/custom_fields/projects/project_mappings_spec.rb

@@ -42,7 +42,7 @@ RSpec.describe "Project Custom Field Mappings", :js do
     create(:project_custom_field_project_mapping, project_custom_field:, project: archived_project)
   end
 
-  let(:project_custom_field_mappings_page) { Pages::Admin::CustomFields::CustomFieldsProjects::ProjectMappings.new }
+  let(:project_custom_field_mappings_page) { Pages::Admin::Settings::ProjectCustomFields::ProjectMappings.new }
 
   context "with insufficient permissions" do
     it "is not accessible" do

spec/support/pages/admin/settings/project_custom_fields/index.rb

@@ -32,8 +32,8 @@ require "support/pages/custom_fields/index_page"
 
 module Pages
   module Admin
-    module CustomFields
-      module CustomFieldsProjects
+    module Settings
+      module ProjectCustomFields
         class Index < ::Pages::CustomFields::IndexPage
           def path
             "/admin/settings/project_custom_fields"

spec/support/pages/admin/settings/project_custom_fields/project_mappings.rb

@@ -32,8 +32,8 @@ require "support/pages/custom_fields/project_mappings"
 
 module Pages
   module Admin
-    module CustomFields
-      module CustomFieldsProjects
+    module Settings
+      module ProjectCustomFields
         class ProjectMappings < ::Pages::CustomFields::ProjectMappings
           def path(project_custom_field)
             "/admin/settings/project_custom_fields/#{project_custom_field.id}/project_mappings"