Revert "Update react monorepo to v19 (#91)"

This reverts commit 2ac637d.

Author: daohoangson

package-lock.json

@@ -24,8 +24,8 @@
   "dependencies": {
     "i18next": "^24.2.0",
     "i18next-browser-languagedetector": "^8.0.2",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
     "react-i18next": "^15.2.0"
   },
   "devDependencies": {
@@ -41,8 +41,8 @@
     "@testing-library/react": "^16.1.0",
     "@testing-library/user-event": "^14.5.2",
     "@types/node": "^22.10.2",
-    "@types/react": "^19.0.2",
-    "@types/react-dom": "^19.0.2",
+    "@types/react": "^18.3.18",
+    "@types/react-dom": "^18.3.5",
     "@vitejs/plugin-react": "^4.3.4",
     "@vitest/coverage-istanbul": "^2.1.8",
     "@vitest/ui": "^2.1.8",