refactor: update GeminiThinkingConfig initialization

relay/channel/siliconflow/adaptor.go

@@ -74,13 +74,9 @@ func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, info *relaycom
 	switch info.RelayMode {
 	case constant.RelayModeRerank:
 		err, usage = siliconflowRerankHandler(c, resp)
-	case constant.RelayModeChatCompletions:
-		if info.IsStream {
-			err, usage = openai.OaiStreamHandler(c, resp, info)
-		} else {
-			err, usage = openai.OpenaiHandler(c, resp, info)
-		}
 	case constant.RelayModeCompletions:
+		fallthrough
+	case constant.RelayModeChatCompletions:
 		if info.IsStream {
 			err, usage = openai.OaiStreamHandler(c, resp, info)
 		} else {