🐛Bugfix: model list provider mismatch, delete dialog errors, and password strength reset

[ayiya12]

PR Description

Summary

Three independent bug fixes:

1. Fix [Bug] When adding models in batches, switching to video understanding models results in an incorrect model list. #3066
   Fix incorrect model list when switching provider during batch add — The three model-list hooks (useDashscopeModelList, useSiliconModelList, useTokenponyModelList) trigger their auto-fetch effect without checking form.provider, so switching providers lets the previous provider's stale request overwrite the new provider's model list. Fix: each hook now checks that form.provider matches before fetching.

2. Fix [Bug] When the model's API key becomes invalid, the model cannot be properly deleted #2761
   Fix model deletion dialog showing garbage rows when API key is invalid — When a provider request fails, the backend didn't pass status_code, and the frontend rendered the error object as if it were model data, producing "ghost rows" in the delete dialog. Fix: the backend now attaches status_code on caught exceptions, and the frontend uses processProviderResponse to detect errors and clear the polluted state instead of rendering it.

3. Fix [Bug] Need to reset password strength indicator when re-entering registration page after logout #3204
   Fix password strength indicator not resetting on re-entering register page — resetForm never cleared the local passwordValue state, so the strength indicator kept showing the previously entered password's strength. Fix: added setPasswordValue("") to the reset logic.

Changes

• frontend/hooks/model/{useDashscopeModelList,useSiliconModelList,useTokenponyModelList}.ts — validate form.provider before auto-fetching
• backend/services/providers/{dashscope,silicon,tokenpony}_provider.py — attach status_code on caught exceptions
• frontend/app/[locale]/models/components/model/ModelDeleteDialog.tsx — use processProviderResponse to detect errors and clear state
• frontend/components/auth/registerModal.tsx — clear passwordValue on reset

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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