Improve project regulated settings check

More often we check for MR approval rules which invoke this method
multiple times. This change will cache the check result and avoid
unneeded trips to the database.

ee/app/models/ee/project.rb

@@ -216,10 +216,12 @@ module EE
     end
 
     def has_regulated_settings?
-      return unless compliance_framework_setting
+      strong_memoize(:has_regulated_settings) do
+        next false unless compliance_framework_setting
 
-      compliance_framework_id = ::ComplianceManagement::ComplianceFramework::FRAMEWORKS[compliance_framework_setting.framework.to_sym]
-      ::Gitlab::CurrentSettings.current_application_settings.compliance_frameworks.include?(compliance_framework_id)
+        compliance_framework_id = ::ComplianceManagement::ComplianceFramework::FRAMEWORKS[compliance_framework_setting.framework.to_sym]
+        ::Gitlab::CurrentSettings.current_application_settings.compliance_frameworks.include?(compliance_framework_id)
+      end
     end
 
     def can_store_security_reports?

ee/changelogs/unreleased/tancnle-memoize-project-regulated-settings-check.yml

+---
+title: Memoize project regulated settings check
+merge_request: 37403
+author:
+type: performance

ee/spec/models/project_spec.rb

@@ -573,9 +573,9 @@ RSpec.describe Project do
   end
 
   describe '#has_regulated_settings?' do
-    let_it_be(:framework) { ComplianceManagement::ComplianceFramework::FRAMEWORKS.first }
-    let_it_be(:compliance_framework_setting) { create(:compliance_framework_project_setting, framework: framework.first.to_s) }
-    let_it_be(:project) { create(:project, compliance_framework_setting: compliance_framework_setting) }
+    let(:framework) { ComplianceManagement::ComplianceFramework::FRAMEWORKS.first }
+    let(:compliance_framework_setting) { build(:compliance_framework_project_setting, framework: framework.first.to_s) }
+    let(:project) { build(:project, compliance_framework_setting: compliance_framework_setting) }
 
     subject { project.has_regulated_settings? }
 
@@ -596,7 +596,7 @@ RSpec.describe Project do
     end
 
     context 'project does not have compliance framework' do
-      let_it_be(:project) { create(:project) }
+      let(:project) { build(:project) }
 
       it { is_expected.to be_falsey }
     end