feat: converted notification redux structure to context API (#598)

* feat: converted notification redux structure to context API

* fix: fixed more notification show button issue

* fix: fixed naming and restructure issue

* fix: renamed component

* refactor: rmeoved alt attribute from button

* fix: fixed disable next line lint issue

* fix: fixed UI placement issue

* test: fix test cases

* fix: refactor useref code

* refactor: refactor learningHeader component

* fix: fix test case of learningheader

* fix: refactor changes

Author: sundasnoreen12

.env.development

@@ -21,3 +21,4 @@ LOGO_TRADEMARK_URL=https://edx-cdn.org/v3/prod/logo-trademark.svg
 LOGO_WHITE_URL=https://edx-cdn.org/v3/prod/logo-white.svg
 FAVICON_URL=https://edx-cdn.org/v3/prod/favicon.ico
 NOTIFICATION_FEEDBACK_URL=''
+CAREERS_URL=''

.env.test

@@ -21,3 +21,4 @@ LOGO_TRADEMARK_URL=https://edx-cdn.org/v3/prod/logo-trademark.svg
 LOGO_WHITE_URL=https://edx-cdn.org/v3/prod/logo-white.svg
 FAVICON_URL=https://edx-cdn.org/v3/prod/favicon.ico
 NOTIFICATION_FEEDBACK_URL=''
+CAREERS_URL=''

.eslintrc.js

@@ -1,4 +1,8 @@
 // eslint-disable-next-line import/no-extraneous-dependencies
 const { createConfig } = require('@openedx/frontend-build');
 
-module.exports = createConfig('eslint');
+module.exports = createConfig('eslint', {
+  globals: {
+    lightningjs: true,
+  },
+});