fix: Update Gemini safety settings default value

setting/model_setting/gemini.go

@@ -6,7 +6,7 @@ import (
 )
 
 var geminiSafetySettings = map[string]string{
-	"default":                       "OFF",
+	"default":                       "BLOCK_NONE",
 	"HARM_CATEGORY_CIVIC_INTEGRITY": "BLOCK_NONE",
 }
 

web/src/pages/Setting/Model/SettingGeminiModel.js

@@ -10,7 +10,7 @@ import {
 import { useTranslation } from 'react-i18next';
 
 const GEMINI_SETTING_EXAMPLE = {
-  'default': 'OFF',
+  'default': 'BLOCK_NONE',
   'HARM_CATEGORY_CIVIC_INTEGRITY': 'BLOCK_NONE',
 };