🔨 Upgrade android gradle project

android/app/build.gradle.kts

@@ -11,7 +11,7 @@ plugins {
 android {
     namespace = "dev.solsynth.solian"
     compileSdk = flutter.compileSdkVersion
-    ndkVersion = "27.0.12077973"
+    ndkVersion = "29.0.13113456"
 
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17

android/app/src/main/kotlin/com/example/island/MainActivity.kt

@@ -1,5 +0,0 @@
-package dev.solsynth.solian
-
-import io.flutter.embedding.android.FlutterActivity
-
-class MainActivity : FlutterActivity()

android/app/src/main/kotlin/com/example/solian/MainActivity.kt

@@ -0,0 +1,14 @@
+package dev.solsynth.solian
+
+import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugins.sharedpreferences.LegacySharedPreferencesPlugin
+
+class MainActivity : FlutterActivity()
+{
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+        // https://github.com/flutter/flutter/issues/153075#issuecomment-2693189362
+        flutterEngine.plugins.add(LegacySharedPreferencesPlugin())
+    }
+}