fix(nuxt): hide unhandled error messages in prod

[danielroe]

🔗 Linked issue

nitrojs/nitro#2591

📚 Description

This applies a fix made in nitro to our forked version of error utility. From @pi0:

We should hide error messages (to client) in case of unhandled errors because they can include internal server state.

Thanks for @GalacticHypernova for discovering this! (issue was if a chunk is missing, we were showing full path but it can be extended to other causes)

Note: This might be a minor behavior change but since we only hide unhandled errors, (new Error not createError) i guess should be safe for v2 as patch.

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