disable welcome modal in dev env

src/features/OnlineExam/OnlineExamHome.vue

@@ -36,7 +36,10 @@ export default {
   },
   beforeMount() {
     this.$nextTick(() => {
-      if (this.previousUrl.startsWith("/login/")) {
+      if (
+        this.previousUrl.startsWith("/login/") &&
+        process.env.NODE_ENV !== "development"
+      ) {
         this.$Modal.info({
           render: () => (
             <div class="welcome-modal">