fix: 当积分不足时添加语音提示

在AI流式调用返回积分不足错误码(2001)时，增加语音提示功能

local_plugins/agent_service/ios/agent_service/Sources/agent_service/AgentServiceImpl.swift

@@ -1782,6 +1782,9 @@ class ChatApiStreamCallback: StreamCallback {
                 "code": code,
                 "message": message
             ])
+            if(code == 2001){
+                agentService.azureTtsHelper?.speakStream(sessionid: sessionid,agentService.insufficientIntegralText)
+            }
             agentService.isAiStreaming = false
             os_log(
                 "liwei--------------- AI Call onError  code: %{public}d message: %{public}@ ",