Improve error tracking integrated collector

Require project error tracking integrated setting
to be true for collector to record errors.
Signed-off-by: Dmytro Zaporozhets <dzaporozhets@gitlab.com>

lib/api/error_tracking_collector.rb

@@ -22,8 +22,8 @@ module API
       end
 
       def feature_enabled?
-        ::Feature.enabled?(:integrated_error_tracking, project) &&
-          project.error_tracking_setting&.enabled?
+        project.error_tracking_setting&.enabled? &&
+          project.error_tracking_setting&.integrated_client?
       end
 
       def find_client_key(public_key)

spec/factories/project_error_tracking_settings.rb

@@ -12,5 +12,9 @@ FactoryBot.define do
     trait :disabled do
       enabled { false }
     end
+
+    trait :integrated do
+      integrated { true }
+    end
   end
 end

spec/requests/api/error_tracking_collector_spec.rb

@@ -4,7 +4,7 @@ require 'spec_helper'
 
 RSpec.describe API::ErrorTrackingCollector do
   let_it_be(:project) { create(:project, :private) }
-  let_it_be(:setting) { create(:project_error_tracking_setting, project: project) }
+  let_it_be(:setting) { create(:project_error_tracking_setting, :integrated, project: project) }
   let_it_be(:client_key) { create(:error_tracking_client_key, project: project) }
 
   describe "POST /error_tracking/collector/api/:id/envelope" do
@@ -40,6 +40,14 @@ RSpec.describe API::ErrorTrackingCollector do
       it_behaves_like 'not found'
     end
 
+    context 'integrated error tracking is disabled' do
+      before do
+        setting.update!(integrated: false)
+      end
+
+      it_behaves_like 'not found'
+    end
+
     context 'feature flag is disabled' do
       before do
         stub_feature_flags(integrated_error_tracking: false)