fix: revert bare-resource-fetcher typecheck script to avoid CI race condition

The typecheck script was changed to run `react-native-executorch prepare`
before typechecking, but this causes a race condition in CI: the parallel
`yarn typecheck` step triggers bob build (which cleans lib/typescript) while
expo-resource-fetcher is concurrently typechecking against it, resulting in
TS2307 "Cannot find module 'react-native-executorch'" errors.

Revert to simple `tsc --noEmit` matching the main branch; CI already runs
`--topological-dev run prepare` before typecheck.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: msluszniak

packages/bare-resource-fetcher/package.json

@@ -21,7 +21,7 @@
   },
   "scripts": {
     "prepare": "tsc",
-    "typecheck": "yarn workspace react-native-executorch run prepare && tsc --noEmit",
+    "typecheck": "tsc --noEmit",
     "lint": "eslint \"**/*.{js,ts,tsx}\"",
     "clean": "del-cli lib"
   },