fix: issue in which rotation, dark toggle cause app to reset state

Signed-off-by: Infi <infi@infi.sh>

app/src/main/AndroidManifest.xml

@@ -42,6 +42,7 @@
         <activity
             android:name=".activities.MainActivity"
             android:exported="true"
+            android:configChanges="orientation|screenSize|colorMode"
             android:windowSoftInputMode="adjustResize"
             android:theme="@style/Theme.Revolt.Starting">
             <intent-filter>

app/src/main/java/chat/revolt/activities/MainActivity.kt

@@ -218,6 +218,14 @@ class MainActivity : FragmentActivity() {
         window.statusBarColor = Color.Transparent.toArgb()
     }
 
+    // Same as above for configuration changes (rotation, dark mode, etc.)
+    override fun onConfigurationChanged(newConfig: android.content.res.Configuration) {
+        super.onConfigurationChanged(newConfig)
+        DynamicColors.applyToActivityIfAvailable(this)
+        DynamicColors.applyToActivitiesIfAvailable(RevoltApplication.instance)
+        window.statusBarColor = Color.Transparent.toArgb()
+    }
+
     @OptIn(ExperimentalMaterial3WindowSizeClassApi::class)
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)