fix(build): use --check-files to validate cached files (#1550)

(cherry picked from commit 137efcc)

Co-authored-by: Ankush Menat <[email protected]>

Author: mergify[bot]

package.json

@@ -16,7 +16,7 @@
     "frontend"
   ],
   "scripts": {
-    "postinstall": "cd frontend && yarn install",
+    "postinstall": "cd frontend && yarn install --check-files",
     "dev": "cd frontend && yarn dev",
     "build": "cd frontend && yarn build"
   },