Updater: Migrate away from deprecated ProgressDialog

Follow usage of AlertDialog with ProgressBar as documented in AOSP.
https://developer.android.com/reference/android/app/ProgressDialog

Change-Id: Ie410f839cb5495a4b37ce926d991d662861ef398

app/src/main/java/org/lineageos/updater/UpdatesActivity.java

@@ -17,7 +17,6 @@ package org.lineageos.updater;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
-import android.app.ProgressDialog;
 import android.app.UiModeManager;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
@@ -110,8 +109,7 @@ public class UpdatesActivity extends UpdatesListActivity implements UpdateImport
             });
 
     private UpdateImporter mUpdateImporter;
-    @SuppressWarnings("deprecation")
-    private ProgressDialog importDialog;
+    private AlertDialog importDialog;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -304,14 +302,18 @@ public class UpdatesActivity extends UpdatesListActivity implements UpdateImport
     }
 
     @Override
-    @SuppressWarnings("deprecation")
     public void onImportStarted() {
         if (importDialog != null && importDialog.isShowing()) {
             importDialog.dismiss();
         }
 
-        importDialog = ProgressDialog.show(this, getString(R.string.local_update_import),
-                getString(R.string.local_update_import_progress), true, false);
+        importDialog = new AlertDialog.Builder(this)
+                .setTitle(R.string.local_update_import)
+                .setView(R.layout.progress_dialog)
+                .setCancelable(false)
+                .create();
+
+        importDialog.show();
     }
 
     @Override

app/src/main/res/layout/progress_dialog.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2025 The LineageOS Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="horizontal"
+    android:padding="24dp">
+
+    <com.google.android.material.progressindicator.CircularProgressIndicator
+        android:id="@+id/progressBar"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:indeterminate="true"
+        app:indicatorColor="?android:attr/colorAccent"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginStart="16dp"
+        android:text="@string/local_update_import_progress"
+        android:textColor="?android:attr/textColorPrimary"
+        android:textSize="16sp" />
+</LinearLayout>