feat: merge special exams store

src/store.js

@@ -1,4 +1,5 @@
 import { reducer as learningAssistantReducer } from '@edx/frontend-lib-learning-assistant';
+import { reducer as examsReducer } from '@edx/frontend-lib-special-exams';
 import { configureStore } from '@reduxjs/toolkit';
 import { reducer as courseHomeReducer } from './course-home/data';
 import { reducer as coursewareReducer } from './courseware/data/slice';
@@ -12,6 +13,7 @@ export default function initializeStore() {
       models: modelsReducer,
       courseware: coursewareReducer,
       courseHome: courseHomeReducer,
+      exams: examsReducer,
       learningAssistant: learningAssistantReducer,
       recommendations: recommendationsReducer,
       tours: toursReducer,