Fix 'private method 'load' called' when posting non-whitelisted webhook

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/221294

Changelog: fixed

app/controllers/admin/hooks_controller.rb

@@ -8,7 +8,7 @@ class Admin::HooksController < Admin::ApplicationController
   feature_category :integrations
 
   def index
-    @hooks = SystemHook.all
+    @hooks = SystemHook.all.load
     @hook = SystemHook.new
   end
 

app/controllers/projects/hooks_controller.rb

@@ -15,7 +15,7 @@ class Projects::HooksController < Projects::ApplicationController
   feature_category :integrations
 
   def index
-    @hooks = @project.hooks
+    @hooks = @project.hooks.load
     @hook = ProjectHook.new
   end
 

app/views/shared/web_hooks/_index.html.haml

@@ -3,7 +3,7 @@
   .card-header
     %h5
       = hook_class.underscore.humanize.titleize.pluralize
-      (#{hooks.load.size})
+      (#{hooks.size})
 
   - if hooks.any?
     %ul.content-list

ee/app/controllers/groups/hooks_controller.rb

@@ -17,7 +17,7 @@ class Groups::HooksController < Groups::ApplicationController
   feature_category :integrations
 
   def index
-    @hooks = @group.hooks
+    @hooks = @group.hooks.load
     @hook = GroupHook.new
   end