replaces deprecated api usage for android (#62515)

packages/flutter_tools/templates/plugin/android-java.tmpl/src/main/java/androidIdentifier/pluginClass.java.tmpl

@@ -19,7 +19,7 @@ public class {{pluginClass}} implements FlutterPlugin, MethodCallHandler {
 
   @Override
   public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
-    channel = new MethodChannel(flutterPluginBinding.getFlutterEngine().getDartExecutor(), "{{projectName}}");
+    channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "{{projectName}}");
     channel.setMethodCallHandler(this);
   }
 

packages/flutter_tools/templates/plugin/android-kotlin.tmpl/src/main/kotlin/androidIdentifier/pluginClass.kt.tmpl

 package {{androidIdentifier}}
 
-import androidx.annotation.NonNull;
+import androidx.annotation.NonNull
 
 import io.flutter.embedding.engine.plugins.FlutterPlugin
 import io.flutter.plugin.common.MethodCall
@@ -10,7 +10,7 @@ import io.flutter.plugin.common.MethodChannel.Result
 import io.flutter.plugin.common.PluginRegistry.Registrar
 
 /** {{pluginClass}} */
-public class {{pluginClass}}: FlutterPlugin, MethodCallHandler {
+class {{pluginClass}}: FlutterPlugin, MethodCallHandler {
   /// The MethodChannel that will the communication between Flutter and native Android
   ///
   /// This local reference serves to register the plugin with the Flutter Engine and unregister it
@@ -18,8 +18,8 @@ public class {{pluginClass}}: FlutterPlugin, MethodCallHandler {
   private lateinit var channel : MethodChannel
 
   override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
-    channel = MethodChannel(flutterPluginBinding.getFlutterEngine().getDartExecutor(), "{{projectName}}")
-    channel.setMethodCallHandler(this);
+    channel = MethodChannel(flutterPluginBinding.binaryMessenger, "{{projectName}}")
+    channel.setMethodCallHandler(this)
   }
 
   override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {