Fix yalc publish (#2054)

Yalc Publish has been failing since [Sep
29th](e4a9a64).

Here's the fix.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Improved build script artifact detection to more reliably recognize
prebuilt artifacts and to adjust when a build is skipped or retried,
reducing false negatives during automated builds and improving overall
build consistency.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: Judahmeek

package-scripts.yml

@@ -25,9 +25,9 @@ scripts:
       # 3. Check if the project is built now;
       # 4. If it failed, print an error message (still follow https://docs.npmjs.com/cli/v8/using-npm/scripts#best-practices).
       script: >
-        [ -f packages/react-on-rails/lib/ReactOnRails.full.js ] ||
+        [ -f lib/ReactOnRails.full.js ] ||
           (npm run build >/dev/null 2>&1 || true) &&
-          [ -f packages/react-on-rails/lib/ReactOnRails.full.js ] ||
+          [ -f lib/ReactOnRails.full.js ] ||
           { echo 'Building react-on-rails seems to have failed!'; }
 
   format: