fix(OpenAIProvider): Filter empty system prompts (#4896)

src/renderer/src/providers/AiProvider/OpenAIProvider.ts

@@ -1,7 +1,6 @@
 import { DEFAULT_MAX_TOKENS } from '@renderer/config/constant'
 import {
   getOpenAIWebSearchParams,
-  isGrokModel,
   isGrokReasoningModel,
   isHunyuanSearchModel,
   isOpenAIoSeries,
@@ -378,9 +377,9 @@ export default class OpenAIProvider extends BaseProvider {
     const { signal } = abortController
     await this.checkIsCopilot()
 
-    // Grok 模型要求每条消息都不能为空，所以当是 Grok 模型且 systemMessage 内容为空时不发送 systemMessage
+    //当 systemMessage 内容为空时不发送 systemMessage
     let reqMessages: ChatCompletionMessageParam[]
-    if (isGrokModel(model) && !systemMessage.content) {
+    if (!systemMessage.content) {
       reqMessages = [...userMessages]
     } else {
       reqMessages = [systemMessage, ...userMessages].filter(Boolean) as ChatCompletionMessageParam[]