fix: Internal Server Error is no longer returned when AppInvokeQuotaE…

[jiangbo721]

…xceededError occurs.

Summary

Internal Server Error is no longer returned when AppInvokeQuotaExceededError occurs.
code is same with

dify/api/controllers/service_api/app/completion.py

Line 77 in 5b6950e

except (ValueError, AppInvokeQuotaExceededError) as e:

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Checklist

Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[laipz8200]

It seems duplicated with #12246.