♻️ Trans exception from format JSONResponse to format HTTPException in user_managerment_app.py

[ljy65535]

The app layer returns to JsonResponse normally, and returns to HTTPexception abnormally.

[codecov]

Codecov Report

❌ Patch coverage is 98.07692% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
backend/services/user_management_service.py	92.85%	0 Missing and 1 partial ⚠️

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