fix: sample-host更新manager.apk时需要先设置可写入

Author: shifujun

projects/sample/source/sample-host/src/main/java/com/tencent/shadow/sample/host/PluginHelper.java

@@ -74,6 +74,10 @@ public void run() {
 
     private void preparePlugin() {
         try {
+
+            //noinspection ResultOfMethodCallIgnored
+            pluginManagerFile.setWritable(true);
+
             InputStream is = mContext.getAssets().open(sPluginManagerName);
             FileUtils.copyInputStreamToFile(is, pluginManagerFile);