[ci] Specify if-no-files-found on actions/upload-artifact@v4 (#32679)

Defaults to warn, but since some steps require these artifacts to be
uploaded we specify an error if its not found. Some other steps like
playwright test-results are only uploaded on failure so it's okay to
ignore.
---
[//]: # (BEGIN SAPLING FOOTER)
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* #32680
* __->__ #32679
* #32678

.github/workflows/runtime_commit_artifacts.yml

@@ -170,10 +170,12 @@ jobs:
         with:
           name: compiled
           path: compiled/
+          if-no-files-found: error
       - uses: actions/upload-artifact@v4
         with:
           name: compiled-rn
           path: compiled-rn/
+          if-no-files-found: error
 
   commit_www_artifacts:
     needs: download_artifacts