refactor: simplify notifications channels flag logic (#1381)

src/setupTest.js

@@ -1,6 +1,8 @@
 import 'core-js/stable';
 import 'regenerator-runtime/runtime';
 import '@testing-library/jest-dom';
+import { initialize, mergeConfig } from '@edx/frontend-platform';
+import { MockAuthService } from '@edx/frontend-platform/auth';
 
 import MockedPluginSlot from './tests/MockedPluginSlot';
 
@@ -9,3 +11,39 @@ jest.mock('@openedx/frontend-plugin-framework', () => ({
   Plugin: () => 'Plugin',
   PluginSlot: MockedPluginSlot,
 }));
+
+mergeConfig({
+  SUPPORT_URL: process.env.SUPPORT_URL || 'https://support.example.com',
+  SHOW_PUSH_CHANNEL: process.env.SHOW_PUSH_CHANNEL || false,
+  SHOW_EMAIL_CHANNEL: process.env.SHOW_EMAIL_CHANNEL || false,
+  ENABLE_COPPA_COMPLIANCE: (process.env.ENABLE_COPPA_COMPLIANCE || false),
+  ENABLE_ACCOUNT_DELETION: (process.env.ENABLE_ACCOUNT_DELETION !== 'false'),
+  COUNTRIES_WITH_DELETE_ACCOUNT_DISABLED: JSON.parse(process.env.COUNTRIES_WITH_DELETE_ACCOUNT_DISABLED || '[]'),
+  ENABLE_DOB_UPDATE: (process.env.ENABLE_DOB_UPDATE || false),
+  MARKETING_EMAILS_OPT_IN: (process.env.MARKETING_EMAILS_OPT_IN || false),
+  PASSWORD_RESET_SUPPORT_LINK: process.env.PASSWORD_RESET_SUPPORT_LINK || 'https://support.example.com/password-reset',
+  LEARNER_FEEDBACK_URL: process.env.LEARNER_FEEDBACK_URL || 'https://support.example.com/feedback',
+}, 'App loadConfig override handler');
+
+initialize({
+  handlers: {
+    config: () => {
+      mergeConfig({
+        authenticatedUser: {
+          userId: 'abc123',
+          username: 'Mock User',
+          roles: [],
+          administrator: false,
+        },
+      });
+    },
+  },
+  messages: [],
+  authService: MockAuthService,
+});
+
+global.ResizeObserver = jest.fn().mockImplementation(() => ({
+  observe: jest.fn(),
+  unobserve: jest.fn(),
+  disconnect: jest.fn(),
+}));