[fix](insert) Avoid formatting generated insert errors

[foxtail463]

What problem does this PR solve?

Problem Summary:

The unhealthy-backend insert failure path passed a generated error message as the String.format pattern to ErrorReport. If the generated message contains percent signs, reporting can throw a secondary formatting exception and hide the original insert failure. Use a fixed "%s" pattern and pass the generated message as data.

[hello-stephen]

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Please clearly describe your PR:

1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?

[foxtail463]

run buildall