fix: VolcEngine doubao-seedream-4-0-250828

relay/channel/volcengine/adaptor.go

@@ -41,6 +41,8 @@ func (a *Adaptor) ConvertAudioRequest(c *gin.Context, info *relaycommon.RelayInf
 
 func (a *Adaptor) ConvertImageRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.ImageRequest) (any, error) {
 	switch info.RelayMode {
+	case constant.RelayModeImagesGenerations:
+		return request, nil
 	case constant.RelayModeImagesEdits:
 
 		var requestBody bytes.Buffer