fix: the last used model caused the loss of the model configured in the profile in the model selector (#2600)

lua/avante/providers/copilot.lua

@@ -214,7 +214,7 @@ function M:is_disable_stream() return false end
 
 setmetatable(M, { __index = OpenAI })
 
-function M:models_list()
+function M:list_models()
   if M._model_list_cache then return M._model_list_cache end
   if not M._is_setup then M.setup() end
   -- refresh token synchronously, only if it has expired

lua/avante/providers/ollama.lua

@@ -233,7 +233,7 @@ M.on_error = function(result)
 end
 
 -- List available models using Ollama's tags API
-function M:models_list()
+function M:list_models()
   -- Return cached models if available
   if self._model_list_cache then return self._model_list_cache end