Rework feature flag logic

* Use mixin approach

ee/app/assets/javascripts/vue_shared/license_compliance/license_management.vue

 <script>
+import glFeatureFlagsMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';
 import { mapState, mapGetters, mapActions } from 'vuex';
 import { GlButton, GlLoadingIcon, GlIcon, GlPopover } from '@gitlab/ui';
 import { s__ } from '~/locale';
@@ -11,6 +12,7 @@ import DeleteConfirmationModal from './components/delete_confirmation_modal.vue'
 import PaginatedList from '~/vue_shared/components/paginated_list.vue';
 import LicenseApprovals from '../../approvals/components/license_compliance/index.vue';
 
+
 export default {
   name: 'LicenseManagement',
   components: {
@@ -49,7 +51,7 @@ export default {
       return this.isLoadingManagedLicenses && !this.hasPendingLicenses;
     },
     isTooltipEnabled() {
-      return Boolean(gon?.features?.licenseComplianceDeniesMr);
+      return Boolean(this.glFeatures.licenseComplianceDeniesMr);
     },
   },
   watch: {

ee/app/controllers/projects/licenses_controller.rb

@@ -5,8 +5,8 @@ module Projects
     before_action :authorize_read_licenses!, only: [:index]
     before_action :authorize_admin_software_license_policy!, only: [:create, :update]
     before_action do
-      push_frontend_feature_flag(:license_policy_list, default_enabled: true)
       push_frontend_feature_flag(:license_approvals, default_enabled: false)
+      push_frontend_feature_flag(:license_compliance_denies_mr, default_enabled: false)
     end
 
     def index

ee/spec/frontend/vue_shared/license_compliance/license_management_spec.js

@@ -30,7 +30,7 @@ const PaginatedListMock = {
 
 const noop = () => {};
 
-const createComponent = ({ state, getters, props, actionMocks, isAdmin, options }) => {
+const createComponent = ({ state, getters, props, actionMocks, isAdmin, options, provide }) => {
   const fakeStore = new Vuex.Store({
     modules: {
       licenseManagement: {
@@ -63,16 +63,16 @@ const createComponent = ({ state, getters, props, actionMocks, isAdmin, options
     stubs: {
       PaginatedList: PaginatedListMock,
     },
+    provide: {
+      glFeatures: { licenseComplianceDeniesMr: false },
+      ...provide
+    },
     store: fakeStore,
     ...options,
   });
 };
 
 describe('License Management', () => {
-  beforeEach(() => {
-    window.gon = { features: { licenseComplianceDeniesMr: false } };
-  });
-
   afterEach(() => {
     wrapper.destroy();
     wrapper = null;
@@ -197,11 +197,12 @@ describe('License Management', () => {
 
       describe('when licenseComplianceDeniesMr feature flag enabled', () => {
         it('should not show the developer only tooltip', () => {
-          window.gon.features.licenseComplianceDeniesMr = true;
-
           createComponent({
             state: { isLoadingManagedLicenses: false },
             isAdmin: true,
+            provide: {
+              glFeatures: { licenseComplianceDeniesMr: true },
+            },
           });
 
           expect(wrapper.find(GlIcon).exists()).toBe(false);
@@ -211,8 +212,6 @@ describe('License Management', () => {
 
       describe('when licenseComplianceDeniesMr feature flag disabled', () => {
         it('should not show the developer only tooltip', () => {
-          window.gon.features.licenseComplianceDeniesMr = false;
-
           createComponent({
             state: { isLoadingManagedLicenses: false },
             isAdmin: true,
@@ -263,11 +262,13 @@ describe('License Management', () => {
 
       describe('when licenseComplianceDeniesMr feature flag enabled', () => {
         it('should show the developer only tooltip', () => {
-          window.gon.features.licenseComplianceDeniesMr = true;
 
           createComponent({
             state: { isLoadingManagedLicenses: false },
             isAdmin: false,
+            provide: {
+              glFeatures: { licenseComplianceDeniesMr: true },
+            },
           });
 
           expect(wrapper.find(GlIcon).exists()).toBe(true);
@@ -277,8 +278,6 @@ describe('License Management', () => {
 
       describe('when licenseComplianceDeniesMr feature flag disabled', () => {
         it('should not show the developer only tooltip', () => {
-          window.gon.features.licenseComplianceDeniesMr = false;
-
           createComponent({
             state: { isLoadingManagedLicenses: false },
             isAdmin: false,