Fix Go: list providers order issue. (#16616)

### Summary

As title.

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

conf/models/aliyun.json

@@ -1,5 +1,6 @@
 {
   "name": "Aliyun",
+  "rank": 983,
   "url": {
     "default": "https://dashscope.aliyuncs.com",
     "singapore": "https://dashscope-intl.aliyuncs.com",

conf/models/anthropic.json

@@ -1,5 +1,6 @@
 {
   "name": "Anthropic",
+  "rank": 998,
   "url": {
     "default": "https://api.anthropic.com"
   },

conf/models/cohere.json

@@ -1,5 +1,6 @@
 {
   "name": "CoHere",
+  "rank": 990,
   "url": {
     "default": "https://api.cohere.com"
   },

conf/models/deepseek.json

@@ -1,5 +1,6 @@
 {
   "name": "DeepSeek",
+  "rank": 996,
   "url": {
     "default": "https://api.deepseek.com"
   },

conf/models/google.json

@@ -1,5 +1,6 @@
 {
   "name": "Google",
+  "rank": 997,
   "url": {
     "default": "https://generativelanguage.googleapis.com"
   },

conf/models/huggingface.json

@@ -1,5 +1,6 @@
 {
   "name": "HuggingFace",
+  "rank": 991,
   "url": {
     "default": "https://router.huggingface.co/v1"
   },

conf/models/minimax.json

@@ -1,5 +1,6 @@
 {
   "name": "MiniMax",
+  "rank": 987,
   "url": {
     "default": "https://api.minimaxi.com/",
     "global": "https://api.minimax.io/"

conf/models/moonshot.json

@@ -1,5 +1,6 @@
 {
   "name": "Moonshot",
+  "rank": 994,
   "url": {
     "default": "https://api.moonshot.cn/v1"
   },

conf/models/ollama.json

@@ -1,5 +1,6 @@
 {
   "name": "ollama",
+  "rank": 978,
   "url_suffix": {
     "chat": "api/chat",
     "models": "api/tags",

conf/models/openai.json

@@ -1,5 +1,6 @@
 {
   "name": "OpenAI",
+  "rank": 999,
   "url": {
     "default": "https://api.openai.com/v1"
   },

conf/models/openrouter.json

@@ -1,5 +1,6 @@
 {
   "name": "OpenRouter",
+  "rank": 989,
   "url": {
     "default": "https://openrouter.ai/api/v1"
   },

conf/models/replicate.json

@@ -1,5 +1,6 @@
 {
   "name": "Replicate",
+  "rank": 981,
   "url": {
     "default": "https://api.replicate.com"
   },

conf/models/siliconflow.json

@@ -1,5 +1,6 @@
 {
   "name": "SiliconFlow",
+  "rank": 980,
   "url": {
     "default": "https://api.siliconflow.cn/v1"
   },

conf/models/vllm.json

@@ -1,5 +1,6 @@
 {
   "name": "vllm",
+  "rank": 975,
   "url_suffix": {
     "chat": "chat/completions",
     "models": "models",

conf/models/volcengine.json

@@ -1,5 +1,6 @@
 {
   "name": "VolcEngine",
+  "rank": 986,
   "url": {
     "default": "https://ark.cn-beijing.volces.com/api/v3"
   },

conf/models/xai.json

@@ -1,5 +1,6 @@
 {
   "name": "xAI",
+  "rank": 992,
   "url": {
     "default": "https://api.x.ai/v1"
   },

conf/models/zhipu-ai.json

@@ -1,5 +1,6 @@
 {
   "name": "ZHIPU-AI",
+  "rank": 993,
   "url": {
     "default": "https://open.bigmodel.cn/api/paas/v4"
   },

internal/entity/models/model.go

@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 )
 
@@ -174,6 +175,7 @@ type Model struct {
 // Provider represents an LLM provider
 type Provider struct {
 	Name        string            `json:"name"`
+	Rank        int               `json:"rank"`
 	URL         map[string]string `json:"url"`
 	URLSuffix   URLSuffix         `json:"url_suffix"`
 	Models      []*Model          `json:"models"`
@@ -372,6 +374,7 @@ func (pm *ProviderManager) ListProviders() ([]map[string]interface{}, error) {
 
 		providerData := map[string]interface{}{
 			"name":        provider.Name,
+			"rank":        provider.Rank,
 			"url":         provider.URL,
 			"model_types": modelTypes,
 			"url_suffix":  provider.URLSuffix,
@@ -379,6 +382,11 @@ func (pm *ProviderManager) ListProviders() ([]map[string]interface{}, error) {
 		providers = append(providers, providerData)
 	}
 
+	// Sort providers by rank
+	sort.Slice(providers, func(i, j int) bool {
+		return providers[i]["rank"].(int) > providers[j]["rank"].(int)
+	})
+
 	if len(providers) == 0 {
 		return nil, fmt.Errorf("no providers found")
 	}