not keep history for vl and audio models

Author: Juude

apps/Android/MnnLlmChat/app/src/main/java/com/alibaba/mnnllm/android/llm/LlmSession.kt

@@ -62,6 +62,7 @@ class LlmSession (
         val configMap = HashMap<String, Any>().apply {
             put("is_r1", ModelUtils.isR1Model(modelId))
             put("mmap_dir", rootCacheDir ?: "")
+            put("keep_history", keepHistory)
         }
         val extraConfig = ModelConfig.loadConfig(configPath, getModelSettingsFile())?.apply {
             this.assistantPromptTemplate = extraAssistantPrompt
@@ -169,8 +170,6 @@ class LlmSession (
             listener: GenerateProgressListener
     ): HashMap<String, Any>
 
-
-
     private external fun resetNative(instanceId: Long)
 
     private external fun getDebugInfoNative(instanceId: Long): String