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[DevTools] improve troubleshooting in README (#26235)

## Summary

Improve the README when the elements are not loaded due to Chrome
service worker malfunction
M
Mengdi Chen committed
b073104c26613aa0d5f5ac5d0e0a2ca0bca94b5a
Parent: fcf2187
Committed by GitHub <noreply@github.com> on 3/3/2023, 7:02:21 PM