fix: 修复 Gemini 风格 /v1/models 列表请求 (#6199)

* fix: support Gemini model listing on v1 route

* test: cover Gemini query key model listing

middleware/auth.go

@@ -374,7 +374,8 @@ func TokenAuth() func(c *gin.Context) {
 			}
 		}
 		// gemini api 从query中获取key
-		if strings.HasPrefix(c.Request.URL.Path, "/v1beta/models") ||
+		if c.Request.URL.Path == "/v1/models" ||
+			strings.HasPrefix(c.Request.URL.Path, "/v1beta/models") ||
 			strings.HasPrefix(c.Request.URL.Path, "/v1beta/openai/models") ||
 			strings.HasPrefix(c.Request.URL.Path, "/v1/models/") {
 			skKey := c.Query("key")